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Modeling Data The table shows the net sales x (in billions of dollars), the total assets y (in billions of dollars), and the share holder's equity - (in billions of dollars) for Walmart for the years 2010 through 2015. (Source: Wal-Mart Stares, Inc.) Year 2010 2011 2012 2013 2014 2015 x 405.0 418.5 443.4 465.6 473.1 482.2 y 170.7 180.8 193.4 203.1 204.8 203.7 z 70.7 68.5 71.3 76.3 76.3 81.4 A model for the data is z = f ( x , y ) = 0.428 x − 0.653 y + 8.172 . (a) Complete a fourth row in the table using the model to approximate ? for the given values of x and y. Compare the approximations with the actual values of x. (b) Which of the two variables in this model has more influence on share holder's equity? Explain. (c) Simplify the expression for f(x, 150) and interpret its meaning in the context of the problem.

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Multivariable Calculus

11th Edition
Ron Larson + 1 other
Publisher: Cengage Learning
ISBN: 9781337275378

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Chapter
Section
BuyFindarrow_forward

Multivariable Calculus

11th Edition
Ron Larson + 1 other
Publisher: Cengage Learning
ISBN: 9781337275378
Chapter 13.1, Problem 86E
Textbook Problem
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Modeling Data The table shows the net sales x (in billions of dollars), the total assets y (in billions of dollars), and the share holder's equity - (in billions of dollars) for Walmart for the years 2010 through 2015. (Source: Wal-Mart Stares, Inc.)

Year

2010

2011

2012

2013

2014

2015

x

405.0

418.5

443.4

465.6

473.1

482.2

y

170.7

180.8

193.4

203.1

204.8

203.7

z

70.7

68.5

71.3

76.3

76.3

81.4

A model for the data is z = f ( x , y ) = 0.428 x 0.653 y + 8.172 .

(a) Complete a fourth row in the table using the model to approximate ? for the given values of x and y. Compare the approximations with the actual values of x.

(b) Which of the two variables in this model has more influence on share holder's equity? Explain.

(c) Simplify the expression for f(x, 150) and interpret its meaning in the context of the problem.

To determine

Complete the fourth row in the provided table using the model, to approximate z for the provided values of x & y. Compare the approximation with the actual value of Z.

Explanation of Solution

Given:

Modeling data shown in below table:

The table shows the net sales x in billions of dollars.

Total assets in billions of dollars.

Shareholder Equity z in billions of dollars

A model for data is given as z=f(x,y)=0.428x0.653y+8.172.

a)

Year 2010 2011 2012 2013 2014 2015
x 450 418.5 443.4 465.6 473.1 482.2
y 170.7 180.8 193.4 203.1 204.8 203.7
z 70.7 68.5 71.3 76.3 76.3 81.4
Approximate z using model 70.04 69.23 71.66 74.82 76.92 81.54
Zmodel-Zgiven -0.6551 0.73 0.36 -1.47 0.62 0.14

b) Total assets represented by ‘y’ have more influence on the value of ‘z’ which represents the shareholder’s equity.

c) f(x,150)=0.428x89.77

a)

The provide model is z=f(x,y)=0.428x0.653y+8.172 for the year 2010,

x=450,y=170.7

z=0.428×4500.653×170.7+8.172=89.3

Similarly for other years,

Put the values of & y, to approximate the values of z.

Compare approximations with actual values of z, to get values shown in below table.

Year 2010 2011 2012 2013 2014 2015
x 450 418.5 443.4 465.6 473.1 482.2
y 170.7 180.8 193.4 203.1 204.8 203.7
z 70.7 68.5 71.3 76

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Chapter 13 Solutions

Multivariable Calculus
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Use the graph of the surface to...Ch. 13.3 - Area The area of a triangle is represented by...Ch. 13.3 - Volume The volume of a right-circular cone of...Ch. 13.3 - Marginal Revenue A pharmaceutical corporation has...Ch. 13.3 - Marginal Costs A company manufactures two types of...Ch. 13.3 - Psychology Early in the twentieth century, an...Ch. 13.3 - Marginal Productivity Consider the Cobb-Douglas...Ch. 13.3 - Think About It Let V be the number of applicants...Ch. 13.3 - Investment The value of an investment of $1000...Ch. 13.3 - Temperature Distribution The temperature at any...Ch. 13.3 - Apparent Temperature A measure of how hot weather...Ch. 13.3 - Ideal Gas Law The Ideal Gas Law states that PV=nRT...Ch. 13.3 - Marginal Utility The utility function U=f(x,y) is...Ch. 13.3 - Modeling Data Personal consumption expenditures...Ch. 13.3 - Modeling Data The table shows the national health...Ch. 13.3 - Using a Function Consider the function defined by...Ch. 13.3 - Using a Function Consider die function...Ch. 13.3 - Using a Function Consider line function...Ch. 13.4 - CONCEPT CHECK ApproximationDescribe the change in...Ch. 13.4 - CONCEPT CHECK Linear Approximation What is meant...Ch. 13.4 - Finding a Total DifferentialIn Exercises 38, find...Ch. 13.4 - Finding a Total DifferentialIn Exercises 38, find...Ch. 13.4 - Finding a Total DifferentialIn Exercises 38, find...Ch. 13.4 - Finding a Total DifferentialIn Exercises 38, find...Ch. 13.4 - Finding a Total DifferentialIn Exercises 38, find...Ch. 13.4 - Finding a Total Differential In Exercises 3-8,...Ch. 13.4 - Using a Differential as an Approximation In...Ch. 13.4 - Using a Differential as an Approximation In...Ch. 13.4 - Using a Differential as an Approximation In...Ch. 13.4 - Using a Differential as an Approximation In...Ch. 13.4 - Using a Differential as an Approximation In...Ch. 13.4 - Using a Differential as an Approximation In...Ch. 13.4 - Approximating an Expression In Exercises 15-18,...Ch. 13.4 - Approximating an Expression In Exercises 15-18,...Ch. 13.4 - Approximating an Expression In Exercises 15-18,...Ch. 13.4 - Approximating an Expression In Exercises 15-18,...Ch. 13.4 - Continuity If fx and fy are each continuous in an...Ch. 13.4 - HOW DO YOU SEE IT? Which point has greater...Ch. 13.4 - Area The area of the shaded rectangle in the...Ch. 13.4 - Volume The volume of the red right circular...Ch. 13.4 - Volume The possible error involved in measuring...Ch. 13.4 - Volume The possible error involved in measuring...Ch. 13.4 - Numerical Analysis A right circular core of heigh...Ch. 13.4 - Numerical Analysis A right circular core of heigh...Ch. 13.4 - Wind Chill The formula for wind dull C (in degrees...Ch. 13.4 - Resistance The total resistance R (in ohms) of two...Ch. 13.4 - Power Electrical power P is given by P=E2R where...Ch. 13.4 - Acceleration The centripetal acceleration of a...Ch. 13.4 - Volume A trough is 16 feet long (see figure). Its...Ch. 13.4 - Sports A baseball player in center field is...Ch. 13.4 - Inductance The inductance L (in microhenrys) of a...Ch. 13.4 - Pendulum The period T of a pendulum of length L is...Ch. 13.4 - Differentiability In Exercises 35-38, show that:...Ch. 13.4 - Differentiability In Exercises 35-38, show that:...Ch. 13.4 - Differentiability In Exercises 35-38, show that:...Ch. 13.4 - Differentiability In Exercises 35-38, show that:...Ch. 13.4 - Differentiability In Exercises 39 and 40, use the...Ch. 13.4 - Differentiability In Exercises 39 and 40, use the...Ch. 13.5 - Chain RuleConsider w=f(x,y), where x=g(s,t) and...Ch. 13.5 - Implicit Differentiation Why is using the Chain...Ch. 13.5 - Using the Chain Rule In Exercises 3-6, find dw/dt...Ch. 13.5 - Using the Chain Rule In Exercises 3-6, find dw/dt...Ch. 13.5 - Using the Chain Rule In Exercises 3-6, find dw/dt...Ch. 13.5 - Using the Chain Rule In Exercises 3-6, find dw/dt...Ch. 13.5 - Using Different Methods In Exercises 7-12, find...Ch. 13.5 - Using Different Methods In Exercises 7-12, find...Ch. 13.5 - Using Different Methods In Exercises 7-12, find...Ch. 13.5 - Using Different Methods In Exercises 7-12, find...Ch. 13.5 - Using Different Methods In Exercises 7-12, find...Ch. 13.5 - Using Different Methods In Exercises 7-12, find...Ch. 13.5 - Projectile Motion In Exercises 13 and 14. the...Ch. 13.5 - Projectile Motion In Exercises 13 and 14. the...Ch. 13.5 - Finding Partial Derivatives In Exercises 1518,...Ch. 13.5 - Finding Partial Derivatives In Exercises 15-18....Ch. 13.5 - Finding Partial Derivatives In Exercises 1518....Ch. 13.5 - Finding Partial DerivativesIn Exercises 1518, find...Ch. 13.5 - Using Different Methods In Exercises 19-22, find ...Ch. 13.5 - Using Different Methods In Exercises 19-22, find ...Ch. 13.5 - Using Different Methods In Exercises 19-22, find ...Ch. 13.5 - Using Different Methods In Exercises 19-22, find ...Ch. 13.5 - Finding a Derivative ImplicitlyIn Exercises 2326,...Ch. 13.5 - Finding a Derivative Implicitly In Exercises...Ch. 13.5 - Finding a Derivative Implicitly In Exercises...Ch. 13.5 - Finding a Derivative Implicitly In Exercises...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Finding Partial Derivatives Implicitly In...Ch. 13.5 - Homogeneous Functions A function f is homogeneous...Ch. 13.5 - Homogeneous Functions A function f is homogeneous...Ch. 13.5 - Homogeneous Functions A function f is homogeneous...Ch. 13.5 - Homogeneous Functions A function f is homogeneous...Ch. 13.5 - Using a Table of Values Let w=f(x,y),x=g(t), and...Ch. 13.5 - Using a Table of Values Let w=f(x,y),x=g(s,t), and...Ch. 13.5 - Using the Chain Rule Show that wu+wv=0 for...Ch. 13.5 - Using the Chain Rule Demonstrate the result of...Ch. 13.5 - Using the Chain Rule Let F(u,v) be a function of...Ch. 13.5 - HOW DO YOU SEE IT? The path of an object...Ch. 13.5 - Volume and Surface Area The radius of a right...Ch. 13.5 - Ideal Gas Law The Ideal Gas Law is PV=mRT where P...Ch. 13.5 - Moment of Inertia An annular cylinder has an...Ch. 13.5 - Volume and Surface Area The two radii of the...Ch. 13.5 - Cauchy-Riemann Equations Given the functions u(x,...Ch. 13.5 - Cauchy-Riemann Equations Demonstrate the result of...Ch. 13.5 - Homogeneous Function Show that if f(x, y) is...Ch. 13.6 - CONCEPT CHECK Directional DerivativeFor a function...Ch. 13.6 - CONCEPT CHECK GradientWhat is the meaning of the...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 36,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 36,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 36,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 36,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 710,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 710,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 710,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 710,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 1114,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 1114,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 1114,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 1114,...Ch. 13.6 - Finding the Gradient of a FunctionIn Exercises...Ch. 13.6 - Finding the Gradient of a FunctionIn Exercises...Ch. 13.6 - Finding the Gradient of a FunctionIn Exercises...Ch. 13.6 - Finding the Gradient of a FunctionIn Exercises...Ch. 13.6 - Finding the Gradient of a FunctionIn Exercises...Ch. 13.6 - Finding the Gradient of a FunctionIn Exercises...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2124,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2124,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2124,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2124,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2528,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2528,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2528,...Ch. 13.6 - Finding a Directional DerivativeIn Exercises 2528,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Using Properties of the GradientIn Exercises 2938,...Ch. 13.6 - Finding a Normal Vector to a Level CurveIn...Ch. 13.6 - Finding a Normal Vector to a Level CurveIn...Ch. 13.6 - Finding a Normal Vector to a Level CurveIn...Ch. 13.6 - Finding a Normal Vector to a Level CurveIn...Ch. 13.6 - Using a FunctionIn Exercises 4346, (a) find the...Ch. 13.6 - Using a FunctionIn Exercises 4346, (a) find the...Ch. 13.6 - Using a FunctionIn Exercises 4346, (a) find the...Ch. 13.6 - Using a FunctionIn Exercises 4346, (a) find the...Ch. 13.6 - Using a Function Consider the function...Ch. 13.6 - Using a Function Consider the function...Ch. 13.6 - InvestigationConsider the function f(x,y)=x2y2 at...Ch. 13.6 - Investigation Consider the function...Ch. 13.6 - EXPLORING CONCEPTS Think About ItConsider v=3u. Is...Ch. 13.6 - EXPLORING CONCEPTS Sketching a Graph and a...Ch. 13.6 - Topography The surface of a mountain is modeled by...Ch. 13.6 - HOW DO YOU SEE IT? The figure shows a topographic...Ch. 13.6 - Temperature The temperature at the point (x,y) on...Ch. 13.6 - Temperature The temperature at the point (x,y) on...Ch. 13.6 - Finding the Direction of Maximum IncreaseIn...Ch. 13.6 - Finding the Direction of Maximum IncreaseIn...Ch. 13.6 - Finding the Path of a Heat-Seeking ParticleIn...Ch. 13.6 - Finding the Path of a Heat-Seeking ParticleIn...Ch. 13.6 - True or False? In Exercises 6164, determine...Ch. 13.6 - True or False? In Exercises 6164, determine...Ch. 13.6 - True or False? In Exercises 6164, determine...Ch. 13.6 - True or False? In Exercises 6164, determine...Ch. 13.6 - Finding a FunctionFind a function f such that...Ch. 13.6 - Ocean Floor A team of oceanographers is mapping...Ch. 13.6 - Using a Function Consider the function f(x,y)=xy3...Ch. 13.6 - Directional DerivativeConsider the function...Ch. 13.7 - CONCEPT CHECK Tangent VectorConsider a point...Ch. 13.7 - CONCEPT CHECK Normal LineConsider a point...Ch. 13.7 - Describing a SurfaceIn Exercises 36, describe the...Ch. 13.7 - Describing a SurfaceIn Exercises 36, describe the...Ch. 13.7 - Describing a SurfaceIn Exercises 36, describe the...Ch. 13.7 - Describing a SurfaceIn Exercises 36, describe the...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding an Equation of a Tangent Plane and a...Ch. 13.7 - Finding the Equation of a Tangent Line to a...Ch. 13.7 - Finding the Equation of a Tangent Line to a...Ch. 13.7 - Finding the Equation of a Tangent Line to a...Ch. 13.7 - Finding the Equation of a Tangent Line to a...Ch. 13.7 - Finding the Equation of a Tangent Line to a...Ch. 13.7 - Finding the Equation of a Tangent Line to a...Ch. 13.7 - Finding the Angle of Inclination of a Tangent...Ch. 13.7 - Finding the Angle of Inclination of a Tangent...Ch. 13.7 - Finding the Angle of Inclination of a Tangent...Ch. 13.7 - Finding the Angle of Inclination of a Tangent...Ch. 13.7 - Horizontal Tangent PlaneIn Exercises 3742, find...Ch. 13.7 - Horizontal Tangent PlaneIn Exercises 3742, find...Ch. 13.7 - Horizontal Tangent PlaneIn Exercises 3742, find...Ch. 13.7 - Horizontal Tangent PlaneIn Exercises 3742, find...Ch. 13.7 - Horizontal Tangent PlaneIn Exercises 3742, find...Ch. 13.7 - Horizontal Tangent PlaneIn Exercises 3742, find...Ch. 13.7 - Tangent SurfacesIn Exercises 43 and 44, show that...Ch. 13.7 - Tangent SurfacesIn Exercises 43 and 44, show that...Ch. 13.7 - Perpendicular Tangent PlanesIn Exercises 45 and...Ch. 13.7 - Perpendicular Tangent PlanesIn Exercises 45 and...Ch. 13.7 - EXPLORING CONCEPTS Tangent Plane The tangent plane...Ch. 13.7 - EXPLORING CONCEPTS Normal LinesFor some surfaces,...Ch. 13.7 - Using an EllipsoidFind a point on the ellipsoid...Ch. 13.7 - Using a HyperboloidFind a point on the hyperboloid...Ch. 13.7 - Using an EllipsoidFind a point on the ellipsoid...Ch. 13.7 - HOW DO YOU SEE IT? The graph shows the ellipsoid...Ch. 13.7 - InvestigationConsider the function...Ch. 13.7 - InvestigationConsider the function f(x,y)=sinyx on...Ch. 13.7 - Using FunctionsConsider the functions...Ch. 13.7 - Using FunctionsConsider the functions...Ch. 13.7 - Writing a Tangent PlaneIn Exercises 57 and 58,...Ch. 13.7 - Writing a Tangent PlaneIn Exercises 57 and 58,...Ch. 13.7 - Tangent Planes of a ConeShow that any tangent...Ch. 13.7 - Tangent PlanesLet f be a differentiable function...Ch. 13.7 - Approximation Consider the following...Ch. 13.7 - ApproximationRepeat Exercise 61 for the function...Ch. 13.7 - ProofProve that the angle of inclination ? of the...Ch. 13.7 - Proof Prove theorem 13.14.Ch. 13.8 - CONCEPT CHECK Function of Two VariablesFor a...Ch. 13.8 - CONCEPT CHECK Second Partials TestUnder what...Ch. 13.8 - Finding Relative ExtremaIn Exercises 38, identify...Ch. 13.8 - Finding Relative ExtremaIn Exercises 38, identify...Ch. 13.8 - Finding Relative ExtremaIn Exercises 38, identify...Ch. 13.8 - Finding Relative ExtremaIn Exercises 38, identify...Ch. 13.8 - Finding Relative ExtremaIn Exercises 38, identify...Ch. 13.8 - Finding Relative ExtremaIn Exercises 38, identify...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Using the Second Partials TestIn Exercises 924,...Ch. 13.8 - Finding Relative Extrema and Saddle Points Using...Ch. 13.8 - Finding Relative Extrema and Saddle Points Using...Ch. 13.8 - Finding Relative Extrema and Saddle Points Using...Ch. 13.8 - Finding Relative Extrema and Saddle Points Using...Ch. 13.8 - Finding Relative ExtremaIn Exercises 29 and 30,...Ch. 13.8 - Finding Relative ExtremaIn Exercises 29 and 30,...Ch. 13.8 - Think About ItIn Exercises 3134, determine whether...Ch. 13.8 - Think About ItIn Exercises 3134, determine whether...Ch. 13.8 - Think About ItIn Exercises 3134, determine whether...Ch. 13.8 - Think About ItIn Exercises 3134, determine whether...Ch. 13.8 - Finding Relative Extrema and Saddle PointsIn...Ch. 13.8 - Finding Relative Extrema and Saddle PointsIn...Ch. 13.8 - Finding Relative Extrema and Saddle Points In...Ch. 13.8 - Finding Relative Extrema and Saddle PointsIn...Ch. 13.8 - Finding Absolute ExtremaIn Exercises 3946, find...Ch. 13.8 - Finding Absolute Extrema In Exercises 39-46, find...Ch. 13.8 - Finding Absolute Extrema In Exercises 39-46, find...Ch. 13.8 - Finding Absolute Extrema In Exercises 39-46, find...Ch. 13.8 - Finding Absolute Extrema In Exercises 39-46, find...Ch. 13.8 - Finding Absolute ExtremaIn Exercises 3946, find...Ch. 13.8 - Finding Absolute Extrema In Exercises 39-46, find...Ch. 13.8 - Finding Absolute ExtremaIn Exercises 3946, find...Ch. 13.8 - Examining a FunctionIn Exercises 47 and 48, find...Ch. 13.8 - Examining a Function In Exercises 47 and 48, find...Ch. 13.8 - EXPLORING CONCEPTS Using the Second Partial TestA...Ch. 13.8 - EXPLORING CONCEPTS Using the Second Partials Test...Ch. 13.8 - EXPLORING CONCEPTS Sketching a GraphIn Exercises...Ch. 13.8 - EXPLORING CONCEPTS Sketching a Graph In Exercises...Ch. 13.8 - Comparing Functions Consider the functions...Ch. 13.8 - HOW DO YOU SEE IT? Determine whether each labeled...Ch. 13.8 - True or False? In Exercises 5558, determine...Ch. 13.8 - True or False? In Exercises 5558, determine...Ch. 13.8 - True or False? In Exercises 5558, determine...Ch. 13.8 - True or False? In Exercises 5558, determine...Ch. 13.9 - CONCEPT CHECK Applied Optimization ProblemsIn your...Ch. 13.9 - CONCEPT CHECK Method of Least SquaresIn your own...Ch. 13.9 - Finding Minimum DistanceIn Exercises 3 and 4, find...Ch. 13.9 - Finding Minimum DistanceIn Exercises 3 and 4, find...Ch. 13.9 - Finding Minimum DistanceIn Exercises 5 and 6, find...Ch. 13.9 - Finding Minimum DistanceIn Exercises 5 and 6, find...Ch. 13.9 - Finding Positive Numbers In Exercises 7-10, find...Ch. 13.9 - Finding Positive Numbers In Exercises 7-10, find...Ch. 13.9 - Finding Positive Numbers In Exercises 7-10, find...Ch. 13.9 - Finding Positive Numbers In Exercises 7-10, find...Ch. 13.9 - CostA home improvement contractor is painting the...Ch. 13.9 - Maximum Volume The material for constructing the...Ch. 13.9 - Volume and Surface AreaShow that a rectangular box...Ch. 13.9 - Maximum VolumeShow that the rectangular box of...Ch. 13.9 - Maximum RevenueA company manufactures running...Ch. 13.9 - Maximum ProfitA corporation manufactures candles...Ch. 13.9 - Hardy-Weinberg LawCommon blood types are...Ch. 13.9 - Shannon Diversity IndexOne way to measure species...Ch. 13.9 - Minimum CostA water line is to be built from point...Ch. 13.9 - AreaA trough with trapezoidal cross sections is...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Finding the Least Squares Regression LineIn...Ch. 13.9 - Modeling Data The table shows the gross income tax...Ch. 13.9 - Modeling Data The ages x (in years) and systolic...Ch. 13.9 - EXPLORING CONCEPTS Method of Least SquaresFind a...Ch. 13.9 - HOW DO YOU SEE IT? Match the regression equation...Ch. 13.9 - Finding the Least Squares Regression QuadraticIn...Ch. 13.9 - Finding the Least Squares Regression QuadraticIn...Ch. 13.9 - Finding the Least Squares Regression QuadraticIn...Ch. 13.9 - Finding the Least Squares Regression QuadraticIn...Ch. 13.9 - Modeling DataAfter a new turbocharger for an...Ch. 13.9 - Modeling Data The table shows the total numbers of...Ch. 13.9 - Modeling DataA meteorologist measures the...Ch. 13.9 - Modeling Data The endpoints of the interval over...Ch. 13.9 - Using the Second Partial TestUse the Second...Ch. 13.10 - CONCEPT CHECK Constrained Optimization Problems...Ch. 13.10 - CONCEPT CHECK Method of Lagrange Multipliers In...Ch. 13.10 - Using Lagrange Multipliers In Exercises 310, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 310, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 310, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 310, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 310, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3-10, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 310, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 310, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 1114, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 1114, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 1114, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 1114, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 15 and 16,...Ch. 13.10 - Using Lagrange Multipliers In Exercises 15 and 16,...Ch. 13.10 - Using Lagrange Multipliers In Exercises 17 and 18,...Ch. 13.10 - Using Lagrange Multipliers In Exercises 17 and 18,...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Finding Minimum Distance In Exercises 19-28, use...Ch. 13.10 - Intersection of Surfaces In Exercises 29 and 30,...Ch. 13.10 - Intersection of Surfaces In Exercises 29 and 30,...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Using Lagrange Multipliers In Exercises 3138, use...Ch. 13.10 - Maximum Volume Use Lagrange multipliers to find...Ch. 13.10 - HOW DO YOU SEE IT? The graphs show the constraint...Ch. 13.10 - EXPLORING CONCEPTS Method of Lagrange Multipliers...Ch. 13.10 - EXPLORING CONCEPTS Method of Lagrange Multipliers...Ch. 13.10 - Minimum Cost A cargo container (in the shape of a...Ch. 13.10 - Geometric and Arithmetic Means (a) Use Lagrange...Ch. 13.10 - Minimum Surface Area Use Lagrange multipliers to...Ch. 13.10 - Temperature Let T(x,y,z)=100+x2+y2 represent the...Ch. 13.10 - Refraction of Light When light waves traveling in...Ch. 13.10 - Area and Perimeter A semicircle is on top of a...Ch. 13.10 - Production Level In Exercises 49 and 50, use...Ch. 13.10 - Production Level In Exercises 49 and 50, use...Ch. 13.10 - Cost In Exercises 51 and 52, use Lagrange...Ch. 13.10 - Cost In Exercises 51 and 52, use Lagrange...Ch. 13.10 - A can buoy is to be made of three pieces, namely,...Ch. 13 - Evaluating a FunctionIn Exercises 1 and 2,...Ch. 13 - Evaluating a FunctionIn Exercises 1 and 2,...Ch. 13 - Finding the Domain and Range of a FunctionIn...Ch. 13 - Finding the Domain and Range of a FunctionIn...Ch. 13 - Sketching a SurfaceIn Exercises 5 and 6, describe...Ch. 13 - Sketching a Surface In Exercises 5 and 6, describe...Ch. 13 - Sketching a Contour MapIn Exercises 7 and 8,...Ch. 13 - Sketching a Contour MapIn Exercises 7 and 8,...Ch. 13 - ConjectureConsider the function f(x,y)=x2+y2. (a)...Ch. 13 - Cobb-Douglas Production Function A manufacturer...Ch. 13 - Sketching a Level Surface In Exercises 11 and 12,...Ch. 13 - Sketching a Level SurfaceIn Exercises 11 and 12,...Ch. 13 - Limit and ContinuityIn Exercises 1318, find the...Ch. 13 - Limit and ContinuityIn Exercises 1318, find the...Ch. 13 - Limit and Continuity In Exercises 13-18, find the...Ch. 13 - Limit and ContinuityIn Exercises 1318, find the...Ch. 13 - Limit and ContinuityIn Exercises 1318, find the...Ch. 13 - Limit and Continuity In Exercises 13-18, find the...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding Partial DerivativesIn Exercises 1926, find...Ch. 13 - Finding and Evaluating Partial DerivativesIn...Ch. 13 - Finding and Evaluating Partial DerivativesIn...Ch. 13 - Finding and Evaluating Partial DerivativesIn...Ch. 13 - Finding and Evaluating Partial DerivativesIn...Ch. 13 - Finding Second Partial DerivativesIn Exercises...Ch. 13 - Finding Second Partial DerivativesIn Exercises...Ch. 13 - Finding Second Partial DerivativesIn Exercises...Ch. 13 - Finding Second Partial DerivativesIn Exercises...Ch. 13 - Finding the Slopes of a SurfaceFind the slopes of...Ch. 13 - Marginal RevenueA company has two plants that...Ch. 13 - Finding a Total DifferentialIn Exercises 3740,...Ch. 13 - Finding a Total DifferentialIn Exercises 3740,...Ch. 13 - Finding a Total DifferentialIn Exercises 3740,...Ch. 13 - Finding a Total DifferentialIn Exercises 3740,...Ch. 13 - Using a Differential as an ApproximationIn...Ch. 13 - Using a Differential as an ApproximationIn...Ch. 13 - Volume The possible error involved in measuring...Ch. 13 - Lateral Surface AreaApproximate the propagated...Ch. 13 - DifferentiabilityIn Exercises 45 and 46, show that...Ch. 13 - DifferentiabilityIn Exercises 45 and 46, show that...Ch. 13 - Using Different MethodsIn Exercises 4750, find...Ch. 13 - Using Different MethodsIn Exercises 4750, find...Ch. 13 - Using Different MethodsIn Exercises 4750, find...Ch. 13 - Using Different MethodsIn Exercises 4750, find...Ch. 13 - Using Different MethodsIn Exercises 51 and 52,...Ch. 13 - Using Different MethodsIn Exercises 51 and 52,...Ch. 13 - Finding a Derivative ImplicitlyIn Exercises 53 and...Ch. 13 - Finding a Derivative ImplicitlyIn Exercises 53 and...Ch. 13 - Finding Partial Derivative ImplicitlyIn Exercises...Ch. 13 - Finding Partial Derivative ImplicitlyIn Exercises...Ch. 13 - Finding a Directional DerivativeIn Exercises 57...Ch. 13 - Finding a Directional DerivativeIn Exercises 57...Ch. 13 - Finding a Directional DerivativeIn Exercises 59...Ch. 13 - Finding a Directional DerivativeIn Exercises 59...Ch. 13 - Using Properties of the GradientIn Exercises 6166,...Ch. 13 - Using Properties of the GradientIn Exercises 6166,...Ch. 13 - Using Properties of the GradientIn Exercises 6166,...Ch. 13 - Using Properties of the GradientIn Exercises 6166,...Ch. 13 - Using Properties of the GradientIn Exercises 6166,...Ch. 13 - Using Properties of the GradientIn Exercises 6166,...Ch. 13 - Using a Function In Exercises 67 and 68, (a) find...Ch. 13 - Using a FunctionIn Exercises 67 and 68, (a) find...Ch. 13 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13 - Finding an Equation of a Tangent PlaneIn Exercises...Ch. 13 - Finding an Equation of a Tangent Plane and a...Ch. 13 - Finding an Equation of a Tangent Plane and a...Ch. 13 - Finding the Angle of Inclination of a Tangent...Ch. 13 - Finding the Angle of Inclination of a Tangent...Ch. 13 - Horizontal Tangent PlaneIn Exercises 77 and 78,...Ch. 13 - Horizontal Tangent PlaneIn Exercises 77 and 78,...Ch. 13 - Using the Second Partial TestIn Exercises 7984,...Ch. 13 - Using the Second Partial TestIn Exercises 7984,...Ch. 13 - Using the Second Partial TestIn Exercises 7984,...Ch. 13 - Using the Second Partial TestIn Exercises 7984,...Ch. 13 - Using the Second Partial TestIn Exercises 7984,...Ch. 13 - Using the Second Partial TestIn Exercises 7984,...Ch. 13 - Finding Minimum DistanceFind the minimum distance...Ch. 13 - Finding Positive Numbers Find three positive...Ch. 13 - Maximum RevenueA company manufactures two type of...Ch. 13 - Maximum ProfitA corporation manufactures digital...Ch. 13 - Finding the Least Squares Regression LineIn...Ch. 13 - Finding the Least Squares Regression LineIn...Ch. 13 - Modeling DataAn agronomist used four test plots to...Ch. 13 - Modeling Data The table shows the yield y (in...Ch. 13 - Using Lagrange MultipliersIn Exercises 9398, use...Ch. 13 - Using Lagrange MultipliersIn Exercises 9398, use...Ch. 13 - Using Lagrange MultipliersIn Exercises 9398, use...Ch. 13 - Using Lagrange MultipliersIn Exercises 9398, use...Ch. 13 - Using Lagrange MultipliersIn Exercises 9398, use...Ch. 13 - Using Lagrange MultipliersIn Exercises 9398, use...Ch. 13 - Minimum CostA water line is to be built from point...Ch. 13 - Area Herons Formula states that the area of a...Ch. 13 - Minimizing MaterialAn industrial container is in...Ch. 13 - Tangent PlaneLet P(x0,y0,z0) be a point in the...Ch. 13 - Using FunctionsUse a graphing utility to graph the...Ch. 13 - Finding Maximum and Minimum Values (a) Let...Ch. 13 - Minimizing CostsA heated storage room has the...Ch. 13 - Minimizing Costs Repeat Exercise 6 assuming that...Ch. 13 - TemperatureConsider a circular plate of radius 1...Ch. 13 - Cobb-Douglas Production FunctionConsider the...Ch. 13 - Minimizing AreaConsider the ellipse x2a2+y2b2=1...Ch. 13 - Projectile MotionA projectile is launched at an...Ch. 13 - Distance Consider die distance d between the...Ch. 13 - Finding Extrema and Saddle Points Using Technology...Ch. 13 - Proof Prove that if f is a differentiable function...Ch. 13 - Area The figure shows a rectangle that is...Ch. 13 - Tangent PlaneLet f be a differentiable function of...Ch. 13 - Wave EquationShow that u(x,t)=12[sin(xt)+sin(x+t)]...Ch. 13 - Wave EquationShow that u(x,t)=12[f(xct)+f(x+ct)]...Ch. 13 - Verifying EquationsConsider the function w=f(x,y)...Ch. 13 - Using a FunctionDemonstrate the result of Exercise...Ch. 13 - Laplaces EquationRewrite Laplaces equation...

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