Multivariable Calculus
11th Edition
ISBN: 9781337275378
Author: Ron Larson, Bruce H. Edwards
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 12.1, Problem 19E
To determine
Match the graph of the function,
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The long run.
A chair manufacturer hires its assembly-line labour for $18 an hour and calculates that the rental cost of its machinery is $6 per hour. Suppose that a chair can be produced using 4 hours of labour or machinery in any combination. The firm is currently using 1 hour of labour for every 3 hours of machine time. (Assume that labour is on the horizontal axis and capital is on the vertical axis).
3. Graphically illustrate your answer by drawing an isoquant, an isocost line for the current combination of labour and capital and an isocost line for the optimal combination of labour and capital.
An isocost corresponding to the optimal combination of labour and capital
is [a vertical line, a horizontal line, an upward sloping straight line, an upward sloping curve which is not a straight line, a downward sloping straight line, a downward sloping curve which is not a straight line, L-shaped]
has slope [ ] at the optimal combination of inputs
An isoquant…
Use a graphing utility to find the points of intersection of the graphs. Check your results analytically. (Order your answers from smallest to largest x, then from smallest to largest y.)
y = x3 – 4x2 + x – 7y = –x2 + 19x – 7
(x, y) = ( )(x, y) = ( )(x, y) = ( )
Use a graphing utility to find the points of intersection of the graphs of the equations. Check your results analytically y = x3 − 2x2 + x − 1 y = −x2 + 3x − 1
Chapter 12 Solutions
Multivariable Calculus
Ch. 12.1 - CONCEPTS CHECK Vector-valued FunctionDescribe how...Ch. 12.1 - Continuity of a Vector-valued FunctionDescribe...Ch. 12.1 - Prob. 3ECh. 12.1 - Prob. 4ECh. 12.1 - Prob. 5ECh. 12.1 - Prob. 6ECh. 12.1 - Prob. 7ECh. 12.1 - Prob. 8ECh. 12.1 - Prob. 9ECh. 12.1 - Prob. 10E
Ch. 12.1 - Prob. 11ECh. 12.1 - Prob. 12ECh. 12.1 - Writing a Vector-Valued FunctionIn Exercises 1316,...Ch. 12.1 - Prob. 14ECh. 12.1 - Writing a Vector-Valued FunctionIn Exercises 1316,...Ch. 12.1 - Prob. 16ECh. 12.1 - Prob. 17ECh. 12.1 - Prob. 18ECh. 12.1 - Prob. 19ECh. 12.1 - Prob. 20ECh. 12.1 - Prob. 21ECh. 12.1 - Prob. 22ECh. 12.1 - Prob. 23ECh. 12.1 - Prob. 24ECh. 12.1 - Prob. 25ECh. 12.1 - Prob. 26ECh. 12.1 - Prob. 27ECh. 12.1 - Prob. 28ECh. 12.1 - Prob. 29ECh. 12.1 - Prob. 30ECh. 12.1 - Prob. 31ECh. 12.1 - Prob. 32ECh. 12.1 - Sketching a Space Curve In Exercises 31-38, sketch...Ch. 12.1 - Prob. 34ECh. 12.1 - Prob. 35ECh. 12.1 - Prob. 36ECh. 12.1 - Prob. 37ECh. 12.1 - Prob. 38ECh. 12.1 - Prob. 39ECh. 12.1 - Prob. 40ECh. 12.1 - Prob. 41ECh. 12.1 - Prob. 42ECh. 12.1 - Prob. 43ECh. 12.1 - Prob. 44ECh. 12.1 - Prob. 45ECh. 12.1 - Prob. 46ECh. 12.1 - Representing a Graph by a Vector-Valued Function...Ch. 12.1 - Prob. 48ECh. 12.1 - Representing a Graph by a Vector-Valued Function...Ch. 12.1 - Prob. 50ECh. 12.1 - Prob. 51ECh. 12.1 - Prob. 52ECh. 12.1 - Representing a Graph by a Vector-Valued Function...Ch. 12.1 - Prob. 54ECh. 12.1 - Prob. 55ECh. 12.1 - Prob. 56ECh. 12.1 - Prob. 57ECh. 12.1 - Prob. 58ECh. 12.1 - Prob. 59ECh. 12.1 - Prob. 60ECh. 12.1 - Prob. 61ECh. 12.1 - Representing a Graph by Vector-Valued Function In...Ch. 12.1 - Prob. 63ECh. 12.1 - Prob. 64ECh. 12.1 - Finding a Limit In Exercises 65-70, find the limit...Ch. 12.1 - Prob. 66ECh. 12.1 - Finding a Limit In Exercises 65-70, find the limit...Ch. 12.1 - Prob. 68ECh. 12.1 - Finding a Limit In Exercises 65-70, find the limit...Ch. 12.1 - Prob. 70ECh. 12.1 - Continuity of a Vector-Valued Function In...Ch. 12.1 - Prob. 72ECh. 12.1 - Continuity of a Vector-Valued Function In...Ch. 12.1 - Prob. 74ECh. 12.1 - Continuity of a Vector-Valued Function In...Ch. 12.1 - Prob. 76ECh. 12.1 - Prob. 77ECh. 12.1 - Prob. 78ECh. 12.1 - Prob. 79ECh. 12.1 - Prob. 80ECh. 12.1 - Prob. 81ECh. 12.1 - Prob. 82ECh. 12.1 - Prob. 83ECh. 12.1 - Prob. 84ECh. 12.1 - Prob. 85ECh. 12.1 - Prob. 86ECh. 12.1 - Prob. 87ECh. 12.1 - Prob. 88ECh. 12.1 - Prob. 89ECh. 12.1 - Prob. 90ECh. 12.2 - CONCEPT CHECK Derivative Describe the relationship...Ch. 12.2 - Prob. 2ECh. 12.2 - Prob. 3ECh. 12.2 - Prob. 4ECh. 12.2 - Differentiation of Vector-Valued FunctionsIn...Ch. 12.2 - Prob. 6ECh. 12.2 - Differentiation of Vector-Valued FunctionsIn...Ch. 12.2 - Prob. 8ECh. 12.2 - Prob. 9ECh. 12.2 - Prob. 10ECh. 12.2 - Prob. 11ECh. 12.2 - Prob. 12ECh. 12.2 - Prob. 13ECh. 12.2 - Prob. 14ECh. 12.2 - Prob. 15ECh. 12.2 - Prob. 16ECh. 12.2 - Prob. 17ECh. 12.2 - Prob. 18ECh. 12.2 - Prob. 19ECh. 12.2 - Prob. 20ECh. 12.2 - Higher-Order DifferentiationIn Exercises 1922,...Ch. 12.2 - Prob. 22ECh. 12.2 - Higher-Order DifferentiationIn Exercises 2326,...Ch. 12.2 - Prob. 24ECh. 12.2 - Higher-Order DifferentiationIn Exercises 2326,...Ch. 12.2 - Higher-Order DifferentiationIn Exercises 2326,...Ch. 12.2 - Prob. 27ECh. 12.2 - Prob. 28ECh. 12.2 - Finding Intervals on Which a Curve Is Smooth In...Ch. 12.2 - Prob. 30ECh. 12.2 - Finding Intervals on Which a Curve Is Smooth In...Ch. 12.2 - Prob. 32ECh. 12.2 - Prob. 33ECh. 12.2 - Prob. 34ECh. 12.2 - Prob. 35ECh. 12.2 - Prob. 36ECh. 12.2 - Using Two MethodsIn Exercises 37 and 38, find (a)...Ch. 12.2 - Prob. 38ECh. 12.2 - Finding an Indefinite Integral In Exercises 39-46,...Ch. 12.2 - Prob. 40ECh. 12.2 - Finding an Indefinite Integral In Exercises 39-46,...Ch. 12.2 - Prob. 42ECh. 12.2 - Prob. 43ECh. 12.2 - Prob. 44ECh. 12.2 - Prob. 45ECh. 12.2 - Prob. 46ECh. 12.2 - Prob. 47ECh. 12.2 - Prob. 48ECh. 12.2 - Prob. 49ECh. 12.2 - Prob. 50ECh. 12.2 - Prob. 51ECh. 12.2 - Evaluating a Definite Integral In Exercises 47-52,...Ch. 12.2 - Prob. 53ECh. 12.2 - Prob. 54ECh. 12.2 - Prob. 55ECh. 12.2 - Prob. 56ECh. 12.2 - Prob. 57ECh. 12.2 - Finding an Antiderivative In Exercises 53-58, find...Ch. 12.2 - Prob. 59ECh. 12.2 - Think About It Find two vector-valued functions...Ch. 12.2 - Prob. 61ECh. 12.2 - Prob. 62ECh. 12.2 - Prob. 63ECh. 12.2 - Prob. 64ECh. 12.2 - Prob. 65ECh. 12.2 - Prob. 66ECh. 12.2 - Prob. 67ECh. 12.2 - Prob. 68ECh. 12.2 - Prob. 69ECh. 12.2 - Particle MotionA particle moves in the yz-plane...Ch. 12.2 - Prob. 71ECh. 12.2 - Prob. 72ECh. 12.2 - Prob. 73ECh. 12.2 - True or False? In Exercises 73-76, determine...Ch. 12.2 - Prob. 75ECh. 12.2 - Prob. 76ECh. 12.3 - Prob. 1ECh. 12.3 - Prob. 2ECh. 12.3 - Prob. 3ECh. 12.3 - Prob. 4ECh. 12.3 - Finding Velocity and Acceleration Along a Plane...Ch. 12.3 - Prob. 6ECh. 12.3 - Finding Velocity and Acceleration Along a Plane...Ch. 12.3 - Prob. 8ECh. 12.3 - Finding Velocity and Acceleration Along a Plane...Ch. 12.3 - Prob. 10ECh. 12.3 - Finding Velocity and Acceleration Vectors in Space...Ch. 12.3 - Prob. 12ECh. 12.3 - Finding Velocity and Acceleration Vectors in Space...Ch. 12.3 - Prob. 14ECh. 12.3 - Finding Velocity and Acceleration Vectors in Space...Ch. 12.3 - Prob. 16ECh. 12.3 - Finding Velocity and Acceleration Vectors in Space...Ch. 12.3 - Prob. 18ECh. 12.3 - Prob. 19ECh. 12.3 - Prob. 20ECh. 12.3 - Finding a Position Vector by Integration In...Ch. 12.3 - Prob. 22ECh. 12.3 - Prob. 23ECh. 12.3 - Prob. 24ECh. 12.3 - Prob. 25ECh. 12.3 - Prob. 26ECh. 12.3 - Prob. 27ECh. 12.3 - Prob. 28ECh. 12.3 - Prob. 29ECh. 12.3 - Prob. 30ECh. 12.3 - Prob. 31ECh. 12.3 - Prob. 32ECh. 12.3 - Prob. 33ECh. 12.3 - Prob. 34ECh. 12.3 - Prob. 35ECh. 12.3 - Prob. 36ECh. 12.3 - Prob. 37ECh. 12.3 - Prob. 38ECh. 12.3 - Prob. 39ECh. 12.3 - Prob. 40ECh. 12.3 - Prob. 41ECh. 12.3 - Prob. 42ECh. 12.3 - Prob. 43ECh. 12.3 - Prob. 44ECh. 12.3 - Prob. 45ECh. 12.3 - Prob. 46ECh. 12.3 - Prob. 47ECh. 12.3 - Prob. 48ECh. 12.3 - Prob. 49ECh. 12.3 - Prob. 50ECh. 12.3 - Circular Motion In Exercises 51 and 52, use the...Ch. 12.3 - Prob. 52ECh. 12.3 - Prob. 53ECh. 12.3 - Prob. 54ECh. 12.3 - Prob. 55ECh. 12.3 - Particle Motion Consider a particle moving on an...Ch. 12.3 - Prob. 57ECh. 12.3 - Prob. 58ECh. 12.3 - Prob. 59ECh. 12.3 - Prob. 60ECh. 12.3 - Prob. 61ECh. 12.3 - Prob. 62ECh. 12.3 - Prob. 63ECh. 12.4 - Prob. 1ECh. 12.4 - Prob. 2ECh. 12.4 - Finding the Unit Tangent Vector In Exercises 3-8,...Ch. 12.4 - Prob. 4ECh. 12.4 - Finding the Unit Tangent Vector In Exercises 3-8,...Ch. 12.4 - Prob. 6ECh. 12.4 - Finding the Unit Tangent Vector In Exercises 3-8,...Ch. 12.4 - Prob. 8ECh. 12.4 - Prob. 9ECh. 12.4 - Prob. 10ECh. 12.4 - Prob. 11ECh. 12.4 - Prob. 12ECh. 12.4 - Prob. 13ECh. 12.4 - Prob. 14ECh. 12.4 - Finding the Principal Unit Normal Vector In...Ch. 12.4 - Prob. 16ECh. 12.4 - Finding the Principal Unit Normal Vector In...Ch. 12.4 - Prob. 18ECh. 12.4 - Prob. 19ECh. 12.4 - Prob. 20ECh. 12.4 - Prob. 21ECh. 12.4 - Prob. 22ECh. 12.4 - Prob. 23ECh. 12.4 - Prob. 24ECh. 12.4 - Prob. 25ECh. 12.4 - Prob. 26ECh. 12.4 - Prob. 27ECh. 12.4 - Prob. 28ECh. 12.4 - Prob. 29ECh. 12.4 - Prob. 30ECh. 12.4 - Prob. 31ECh. 12.4 - Circular MotionIn Exercises 3134, consider an...Ch. 12.4 - Prob. 33ECh. 12.4 - Prob. 34ECh. 12.4 - Prob. 35ECh. 12.4 - Prob. 36ECh. 12.4 - Prob. 37ECh. 12.4 - Prob. 38ECh. 12.4 - Finding Tangential and Normal Components of...Ch. 12.4 - Prob. 40ECh. 12.4 - Prob. 41ECh. 12.4 - Prob. 42ECh. 12.4 - Prob. 43ECh. 12.4 - Prob. 44ECh. 12.4 - Prob. 45ECh. 12.4 - Prob. 46ECh. 12.4 - Prob. 47ECh. 12.4 - Prob. 48ECh. 12.4 - Prob. 49ECh. 12.4 - Prob. 50ECh. 12.4 - Prob. 51ECh. 12.4 - Prob. 52ECh. 12.4 - Prob. 53ECh. 12.4 - Prob. 54ECh. 12.4 - Prob. 55ECh. 12.4 - Prob. 56ECh. 12.4 - Prob. 57ECh. 12.4 - Prob. 58ECh. 12.4 - Prob. 59ECh. 12.4 - Prob. 60ECh. 12.4 - Prob. 61ECh. 12.4 - Prob. 62ECh. 12.4 - Prob. 63ECh. 12.4 - Prob. 64ECh. 12.4 - Prob. 65ECh. 12.4 - Prob. 66ECh. 12.4 - Prob. 67ECh. 12.4 - Prob. 68ECh. 12.4 - Prob. 69ECh. 12.4 - Prob. 70ECh. 12.4 - Prob. 71ECh. 12.4 - Prob. 72ECh. 12.4 - Prob. 73ECh. 12.4 - Prob. 74ECh. 12.4 - Prob. 75ECh. 12.4 - Prob. 76ECh. 12.5 - Curvature Consider points P and Q on a curve What...Ch. 12.5 - Arc Length Parameter Let r(t) be a space curse....Ch. 12.5 - Prob. 3ECh. 12.5 - Prob. 4ECh. 12.5 - Prob. 5ECh. 12.5 - Prob. 6ECh. 12.5 - Prob. 7ECh. 12.5 - Prob. 8ECh. 12.5 - Projectile Motion The position of a baseball. is...Ch. 12.5 - Prob. 10ECh. 12.5 - Prob. 11ECh. 12.5 - Prob. 12ECh. 12.5 - Prob. 13ECh. 12.5 - Prob. 14ECh. 12.5 - Prob. 15ECh. 12.5 - Prob. 16ECh. 12.5 - Investigation Consider the graph of the...Ch. 12.5 - Prob. 18ECh. 12.5 - Prob. 19ECh. 12.5 - Prob. 20ECh. 12.5 - Prob. 21ECh. 12.5 - Prob. 22ECh. 12.5 - Prob. 23ECh. 12.5 - Prob. 24ECh. 12.5 - Prob. 25ECh. 12.5 - Prob. 26ECh. 12.5 - Finding CurvatureIn Exercises 2328, find the...Ch. 12.5 - Prob. 28ECh. 12.5 - Prob. 29ECh. 12.5 - Prob. 30ECh. 12.5 - Prob. 31ECh. 12.5 - Prob. 32ECh. 12.5 - Prob. 33ECh. 12.5 - Prob. 34ECh. 12.5 - Finding Curvature In Exercises 29-36, find the...Ch. 12.5 - Prob. 36ECh. 12.5 - Prob. 37ECh. 12.5 - Prob. 38ECh. 12.5 - Prob. 39ECh. 12.5 - Prob. 40ECh. 12.5 - Prob. 41ECh. 12.5 - Prob. 42ECh. 12.5 - Prob. 43ECh. 12.5 - Prob. 44ECh. 12.5 - Prob. 45ECh. 12.5 - Prob. 46ECh. 12.5 - Prob. 47ECh. 12.5 - Prob. 48ECh. 12.5 - Prob. 49ECh. 12.5 - Prob. 50ECh. 12.5 - Prob. 51ECh. 12.5 - Prob. 52ECh. 12.5 - Prob. 53ECh. 12.5 - Prob. 54ECh. 12.5 - Prob. 55ECh. 12.5 - Prob. 56ECh. 12.5 - Prob. 57ECh. 12.5 - Prob. 58ECh. 12.5 - Prob. 59ECh. 12.5 - Prob. 60ECh. 12.5 - Prob. 61ECh. 12.5 - Prob. 62ECh. 12.5 - Prob. 63ECh. 12.5 - Prob. 64ECh. 12.5 - Prob. 65ECh. 12.5 - Speed The smaller the curvature of a bend in a...Ch. 12.5 - Prob. 67ECh. 12.5 - Center of Curvature Use the result of Exercise 67...Ch. 12.5 - Prob. 69ECh. 12.5 - Prob. 70ECh. 12.5 - Prob. 71ECh. 12.5 - Prob. 72ECh. 12.5 - Prob. 73ECh. 12.5 - Prob. 74ECh. 12.5 - Prob. 75ECh. 12.5 - Prob. 76ECh. 12.5 - Curvature of a Cycloid Use the result of Exercise...Ch. 12.5 - Tangential and Normal Components of Acceleration...Ch. 12.5 - Prob. 79ECh. 12.5 - Prob. 80ECh. 12.5 - CurvatureVerify that the curvature at any point...Ch. 12.5 - Prob. 82ECh. 12.5 - Prob. 83ECh. 12.5 - Prob. 84ECh. 12.5 - Prob. 85ECh. 12.5 - Prob. 86ECh. 12.5 - Prob. 87ECh. 12.5 - Prob. 88ECh. 12.5 - Prob. 89ECh. 12.5 - Prob. 90ECh. 12.5 - Prob. 91ECh. 12.5 - Prob. 92ECh. 12.5 - Prob. 93ECh. 12.5 - Prob. 94ECh. 12 - Domain and Continuity In Exercises 1-4, (a) find...Ch. 12 - Prob. 2RECh. 12 - Domain and Continuity In Exercises 1-4, (a) find...Ch. 12 - Domain and Continuity In Exercises 1-4, (a) find...Ch. 12 - Prob. 5RECh. 12 - Prob. 6RECh. 12 - Prob. 7RECh. 12 - Prob. 8RECh. 12 - Prob. 9RECh. 12 - Prob. 10RECh. 12 - Sketching a Curve In Exercises 9-12, sketch the...Ch. 12 - Sketching a Curve In Exercises 9-12, sketch the...Ch. 12 - Prob. 13RECh. 12 - Prob. 14RECh. 12 - Representing a Graph by a Vector-Valued Function...Ch. 12 - Representing a Graph by a Vector-Valued Function...Ch. 12 - Prob. 17RECh. 12 - Finding a Limit In Exercises 17 and 18, find the...Ch. 12 - Prob. 19RECh. 12 - Prob. 20RECh. 12 - Higher-Order Differentiation In Exercise 21 and...Ch. 12 - Prob. 22RECh. 12 - Prob. 23RECh. 12 - Finding Intervals on Which a Curve is SmoothIn...Ch. 12 - Prob. 25RECh. 12 - Prob. 26RECh. 12 - Prob. 27RECh. 12 - Prob. 28RECh. 12 - Prob. 29RECh. 12 - Prob. 30RECh. 12 - Prob. 31RECh. 12 - Prob. 32RECh. 12 - Prob. 33RECh. 12 - Prob. 34RECh. 12 - Prob. 35RECh. 12 - Prob. 36RECh. 12 - Prob. 37RECh. 12 - Prob. 38RECh. 12 - Prob. 39RECh. 12 - Prob. 40RECh. 12 - Prob. 41RECh. 12 - Projectile Motion In Exercises 41 and 42, use the...Ch. 12 - Finding the Unit Tangent Vector In Exercises 43...Ch. 12 - Prob. 44RECh. 12 - Prob. 45RECh. 12 - Prob. 46RECh. 12 - Prob. 47RECh. 12 - Prob. 48RECh. 12 - Prob. 49RECh. 12 - Prob. 50RECh. 12 - Prob. 51RECh. 12 - Prob. 52RECh. 12 - Prob. 53RECh. 12 - Finding Tangential and Normal Components of...Ch. 12 - Prob. 55RECh. 12 - Prob. 56RECh. 12 - Prob. 57RECh. 12 - Prob. 58RECh. 12 - Prob. 59RECh. 12 - Prob. 60RECh. 12 - Prob. 61RECh. 12 - Prob. 62RECh. 12 - Prob. 63RECh. 12 - Prob. 64RECh. 12 - Finding CurvatureIn Exercises 6366, find the...Ch. 12 - Finding CurvatureIn Exercises 6366, find the...Ch. 12 - Finding Curvature In Exercises 67 and 68, find the...Ch. 12 - Prob. 68RECh. 12 - Prob. 69RECh. 12 - Prob. 70RECh. 12 - Prob. 71RECh. 12 - Prob. 72RECh. 12 - Prob. 73RECh. 12 - Cornu Spiral The cornu spiral is given by...Ch. 12 - Prob. 2PSCh. 12 - Prob. 3PSCh. 12 - Prob. 4PSCh. 12 - Cycloid Consider one arch of the cycloid...Ch. 12 - Prob. 6PSCh. 12 - Prob. 7PSCh. 12 - Prob. 8PSCh. 12 - Binormal VectorIn Exercises 911, use the binormal...Ch. 12 - Prob. 10PSCh. 12 - Prob. 11PSCh. 12 - Prob. 12PSCh. 12 - Prob. 13PSCh. 12 - Ferris Wheel You want to toss an object to a...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, calculus and related others by exploring similar questions and additional content below.Similar questions
- Matching In Exercises 9-12, match the equation with its graph. [The graphs are labeled (a), (b), (c), and (d).] x2=8yarrow_forwardMatching In Exercises 9-14, this question, match the equation with its graph. [The graphs are labeled (a)-(f).] x2+y2=16arrow_forwardAnalytic Geometry: Trace the curve y2 = (x − 1)(2x + 3)(3x − 1).arrow_forward
- Surface Area The roof over the stage of an open air theater at a theme park is modeled by f(x, y) = 25[1 + e−(x2+y2)1000 cos2(x2 + y2/ 1000 )] where the stage is a semicircle bounded by the graphs of y = √502 − x2 and y = 0. Use a computer algebra system to approximate the number of square feet of roofing required to cover the surface.arrow_forwardRegarding a χ2-curve: a. At what point on the horizontal axis does the curve begin?b. Classify its shape as symmetric, left skewed, or right skewed.c. As the number of degrees of freedom increases, a χ2-curve begins to look like another type of curve. What type of curve is that?arrow_forward
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Trigonometry (MindTap Course List)TrigonometryISBN:9781337278461Author:Ron LarsonPublisher:Cengage LearningAlgebra & Trigonometry with Analytic GeometryAlgebraISBN:9781133382119Author:SwokowskiPublisher:Cengage
Trigonometry (MindTap Course List)
Trigonometry
ISBN:9781337278461
Author:Ron Larson
Publisher:Cengage Learning
Algebra & Trigonometry with Analytic Geometry
Algebra
ISBN:9781133382119
Author:Swokowski
Publisher:Cengage
What is Ellipse?; Author: Don't Memorise;https://www.youtube.com/watch?v=nzwCInIMlU4;License: Standard YouTube License, CC-BY