Explanation 1) Concept Net change theorem: The integral of a rate of change is the net change: ∫ a b F ' ( x ) d x = F b - F ( a ) 2) Given: C ' x = 0.6 + 0.008 x C 0 = $ 100,000 3) Calculation: The marginal cost is the derivative of the C ( x ) By using the concept, ∫ x 1 x 2 C ' ( x ) d x = C x 2 - C ( x 1 ) i) For first 50 tons: Let x 1 = 0 u n i t s and x 2 = 50 u n i t s Therefore, ∫ 0 50 0.6 + 0.008 x d x = C 50 - C ( 0 ) Since the cost is measured in the thousands of dollar per ton, substitute C 0 = $ 100 in the above step, it becomes ∫ 0 50 0.6 + 0.008 x d x = C 50 - 100 Now, integrate the left side by using the power rule of the integration, it becomes 0.6 x + 0.008 x 2 2 0 50 = C 50 - 100 0.6 50 + 0.008 50 2 2 - 0.6 0 - 0.008 0 2 2 = C 50 - 100 30 + 10 = C 50 - 100 Add 100 on both the sides, it gives C 50 = 40 + 100 C 50 = 140 Thus, the cost of extracting the first 50 tons of copper is 140 or $ 140 , 000

8th Edition

ISBN: 9781285740621

Author: James Stewart

Publisher: Cengage Learning

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Question

Chapter 8.4, Problem 3E

To determine

To find:

i) The cost of extracting the first 50 tons of copper

ii) The cost of extracting the next 50 tons of copper

Expert Solution & Answer

Chapter 8 Solutions

Calculus (MindTap Course List)

Ch. 8.1 - Use the arc length formula 3 to find the length of...Ch. 8.1 - Prob. 2E Ch. 8.1 - Prob. 3E Ch. 8.1 - Prob. 4E Ch. 8.1 - Prob. 5E Ch. 8.1 - Prob. 6E Ch. 8.1 - Prob. 7E Ch. 8.1 - Prob. 8E Ch. 8.1 - Find the exact length of the curve. y=1+6x3/2, 0x1 Ch. 8.1 - Prob. 10E

Ch. 8.1 - Find the exact length of the curve. y=x33+14x,1x2 Ch. 8.1 - Find the exact length of the curve. x=y48+14y2,1y2 Ch. 8.1 - Find the exact length of the curve. x=13y(y3),1y9 Ch. 8.1 - Find the exact length of the curve....Ch. 8.1 - Find the exact length of the curve....Ch. 8.1 - Prob. 16E Ch. 8.1 - Find the exact length of the curve....Ch. 8.1 - Prob. 18E Ch. 8.1 - Find the exact length of the curve. y=ln(1x2),0x12 Ch. 8.1 - Prob. 20E Ch. 8.1 - Prob. 21E Ch. 8.1 - Prob. 22E Ch. 8.1 - Prob. 23E Ch. 8.1 - Prob. 24E Ch. 8.1 - Use Simpsons Rule with n=10 to estimate the arc...Ch. 8.1 - Use Simpsons Rule with n=10 to estimate the arc...Ch. 8.1 - Use Simpsons Rule with n=10 to estimate the arc...Ch. 8.1 - Use Simpsons Rule with n=10 to estimate the arc...Ch. 8.1 - a Graph the curve y=x4x3,0x4. b Compute the...Ch. 8.1 - Repeat Exercise 29 for the curve y=x+sinx 0x2 Ch. 8.1 - Prob. 31E Ch. 8.1 - Prob. 32E Ch. 8.1 - Prob. 33E Ch. 8.1 - a Sketch the curve y3=x2. b Use Formulas 3 and 4...Ch. 8.1 - Prob. 35E Ch. 8.1 - Prob. 36E Ch. 8.1 - Prob. 37E Ch. 8.1 - The arc length function for a curve y=f(x), where...Ch. 8.1 - For the function f(x)=14ex+ex, prove that the arc...Ch. 8.1 - Prob. 40E Ch. 8.1 - A hawk flying at 15 m/s at an altitude of 180 m...Ch. 8.1 - Prob. 42E Ch. 8.1 - Prob. 43E Ch. 8.1 - a The figure shows a telephone wire hanging...Ch. 8.1 - Prob. 45E Ch. 8.1 - Prob. 46E Ch. 8.2 - a Set up an integral for the area of the surface...Ch. 8.2 - Prob. 2E Ch. 8.2 - Prob. 3E Ch. 8.2 - Prob. 4E Ch. 8.2 - a Set up an integral for the area of the surface...Ch. 8.2 - a Set up an integral for the area of the surface...Ch. 8.2 - Find the exact area of the surface obtained by...Ch. 8.2 - Find the exact area of the surface obtained by...Ch. 8.2 - Find the exact area of the surface obtained by...Ch. 8.2 - Prob. 10E Ch. 8.2 - Find the exact area of the surface obtained by...Ch. 8.2 - Prob. 12E Ch. 8.2 - Find the exact area of the surface obtained by...Ch. 8.2 - Prob. 14E Ch. 8.2 - The given curve is rotated about the y-axis. Find...Ch. 8.2 - The given curve is rotated about the y-axis. Find...Ch. 8.2 - The given curve is rotated about the y-axis. Find...Ch. 8.2 - Prob. 18E Ch. 8.2 - Prob. 19E Ch. 8.2 - Prob. 20E Ch. 8.2 - Use Simpsons Rule with n = 10 to approximate the...Ch. 8.2 - Use Simpsons Rule with n = 10 to approximate the...Ch. 8.2 - Prob. 23E Ch. 8.2 - Prob. 24E Ch. 8.2 - Prob. 25E Ch. 8.2 - Prob. 26E Ch. 8.2 - If the region ={(x,y)x1,0y1/x} is rotated about...Ch. 8.2 - If the infinite curve y=ex,x0, is rotated about...Ch. 8.2 - Prob. 29E Ch. 8.2 - A group of engineers is building a parabolic...Ch. 8.2 - a The ellipse x2a2+y2b2=1ab is rotated about the...Ch. 8.2 - Find the surface area of the torus in Exercise...Ch. 8.2 - Prob. 33E Ch. 8.2 - Prob. 34E Ch. 8.2 - Find the area of the surface obtained by rotating...Ch. 8.2 - a Show that the surface area of a zone of a sphere...Ch. 8.2 - Show that if we rotate the curve y=ex/2+ex/2 about...Ch. 8.2 - Prob. 38E Ch. 8.2 - Formula 4 is valid only when f(x)0. Show that when...Ch. 8.3 - An aquarium 5 ft long, 2 ft wide, and 3 ft deep is...Ch. 8.3 - A tank is 8 m long, 4 m wide, 2 m high, and...Ch. 8.3 - Prob. 3E Ch. 8.3 - A vertical plate is submerged or partially...Ch. 8.3 - A vertical plate is submerged or partially...Ch. 8.3 - Prob. 6E Ch. 8.3 - A vertical plate is submerged or partially...Ch. 8.3 - A vertical plate is submerged or partially...Ch. 8.3 - A vertical plate is submerged or partially...Ch. 8.3 - Prob. 10E Ch. 8.3 - Prob. 11E Ch. 8.3 - A milk truck carries milk with density 64.6lb/ft3...Ch. 8.3 - A trough is filled with a liquid of density...Ch. 8.3 - A vertical dam has a semicircular gate as shown in...Ch. 8.3 - A cube with 20-cm-long sides is sitting on the...Ch. 8.3 - Prob. 16E Ch. 8.3 - A swimming pool is 20 ft wide and 40 ft long and...Ch. 8.3 - Prob. 18E Ch. 8.3 - Prob. 19E Ch. 8.3 - Prob. 20E Ch. 8.3 - Prob. 21E Ch. 8.3 - Prob. 22E Ch. 8.3 - Prob. 23E Ch. 8.3 - Prob. 24E Ch. 8.3 - Prob. 25E Ch. 8.3 - Sketch the region bounded by the curves, and...Ch. 8.3 - Sketch the region bounded by the curves, and...Ch. 8.3 - Prob. 28E Ch. 8.3 - Prob. 29E Ch. 8.3 - Prob. 30E Ch. 8.3 - Prob. 31E Ch. 8.3 - Find the centroid of the region bounded by the...Ch. 8.3 - Find the centroid of the region bounded by the...Ch. 8.3 - Calculate the moments Mx and My and the center of...Ch. 8.3 - Calculate the moments Mx and My and the center of...Ch. 8.3 - Prob. 36E Ch. 8.3 - Prob. 37E Ch. 8.3 - Prob. 38E Ch. 8.3 - Prove that the centroid of any triangle is located...Ch. 8.3 - Find the centroid of the region shown, not by...Ch. 8.3 - Find the centroid of the region shown, not by...Ch. 8.3 - A rectangle with sides a and b is divided into...Ch. 8.3 - Prob. 43E Ch. 8.3 - Prob. 44E Ch. 8.3 - Use the Theorem of Pappus to find the volume of...Ch. 8.3 - Use the Theorem of Pappus to find the volume of...Ch. 8.3 - The centroid of a curve can be found by a process...Ch. 8.3 - Prob. 48E Ch. 8.3 - Prob. 49E Ch. 8.3 - Prob. 50E Ch. 8.3 - Prob. 51E Ch. 8.4 - The marginal cost function C(x) was defined to be...Ch. 8.4 - Prob. 2E Ch. 8.4 - Prob. 3E Ch. 8.4 - Prob. 4E Ch. 8.4 - Prob. 5E Ch. 8.4 - The supply function ps(x) for a commodity gives...Ch. 8.4 - Prob. 7E Ch. 8.4 - Prob. 8E Ch. 8.4 - Prob. 9E Ch. 8.4 - A camera company estimates that the demand...Ch. 8.4 - Prob. 11E Ch. 8.4 - Prob. 12E Ch. 8.4 - Prob. 13E Ch. 8.4 - Prob. 14E Ch. 8.4 - Prob. 15E Ch. 8.4 - Prob. 16E Ch. 8.4 - Prob. 17E Ch. 8.4 - A hot, wet summer is causing a mosquito population...Ch. 8.4 - Prob. 19E Ch. 8.4 - Prob. 20E Ch. 8.4 - The dye dilution method is used to measure cardiac...Ch. 8.4 - Prob. 22E Ch. 8.4 - The graph of the concentration function c(t) is...Ch. 8.5 - Prob. 1E Ch. 8.5 - Prob. 2E Ch. 8.5 - Prob. 3E Ch. 8.5 - Prob. 4E Ch. 8.5 - Let f(x)=c/(1+x2). a For what value of c is f a...Ch. 8.5 - Prob. 6E Ch. 8.5 - Prob. 7E Ch. 8.5 - a Explain why the function whose graph is shown is...Ch. 8.5 - Show that the median waiting time for a phone call...Ch. 8.5 - Prob. 10E Ch. 8.5 - An online retailer has determined that the average...Ch. 8.5 - The time between infection and the display of...Ch. 8.5 - Prob. 13E Ch. 8.5 - Prob. 14E Ch. 8.5 - Prob. 15E Ch. 8.5 - Prob. 16E Ch. 8.5 - The speeds of vehicles on a highway with speed...Ch. 8.5 - Prob. 18E Ch. 8.5 - For any normal distribution, find the probability...Ch. 8.5 - Prob. 20E Ch. 8.5 - The hydrogen atom is composed of one proton in the...Ch. 8.R - Prob. 1CC Ch. 8.R - Prob. 2CC Ch. 8.R - Prob. 3CC Ch. 8.R - a What is the physical significance of the centre...Ch. 8.R - Prob. 5CC Ch. 8.R - Prob. 6CC Ch. 8.R - Prob. 7CC Ch. 8.R - Prob. 8CC Ch. 8.R - Prob. 9CC Ch. 8.R - Prob. 10CC Ch. 8.R - Prob. 1E Ch. 8.R - Prob. 2E Ch. 8.R - Prob. 3E Ch. 8.R - a Find the length of the curve y=x416+12x21x2 b...Ch. 8.R - Prob. 5E Ch. 8.R - Prob. 6E Ch. 8.R - Prob. 7E Ch. 8.R - Prob. 8E Ch. 8.R - Prob. 9E Ch. 8.R - Find the area of the surface obtained by rotating...Ch. 8.R - A gate in an irrigation canal is constructed in...Ch. 8.R - A trough is filled with water and its vertical...Ch. 8.R - Prob. 13E Ch. 8.R - 1314 Find the centroid of the region shown.Ch. 8.R - Prob. 15E Ch. 8.R - Prob. 16E Ch. 8.R - Prob. 17E Ch. 8.R - Prob. 18E Ch. 8.R - Prob. 19E Ch. 8.R - Prob. 20E Ch. 8.R - Prob. 21E Ch. 8.R - Lengths of human pregnancies are normally...Ch. 8.R - The length of time spent waiting in line at a...Ch. 8.P - Find the area of the region...Ch. 8.P - Find the centroid of the region enclosed by the...Ch. 8.P - If a sphere of radius r is sliced by a plane whose...Ch. 8.P - a Show that an observer at height H above the...Ch. 8.P - Prob. 5P Ch. 8.P - The figure shows a semicircle with radius 1,...Ch. 8.P - Prob. 7P Ch. 8.P - Consider a flat metal plate to be placed...Ch. 8.P - Prob. 9P Ch. 8.P - A triangle with area 30cm2 is cut from a corner of...Ch. 8.P - Prob. 11P Ch. 8.P - If the needle in Problem 11 has length hL, its...Ch. 8.P - Prob. 13P

Knowledge Booster

i) The cost of extracting the first 50 tons of copper ii) The cost of extracting the next 50 tons of copper

Solution Summary: The author explains that the marginal cost is the derivative of the C(x).

To find: i) The cost of extracting the first 50 tons of copper ii) The cost of extracting the next 50 tons of copper

Chapter 8 Solutions

To find:

i) The cost of extracting the first 50 tons of copper

ii) The cost of extracting the next 50 tons of copper