Problem 1E: Think About It Explain why z2=x+3y is not a functior of x and y. Problem 2E: Function of Two Variables What is a graph of a function of two variables? How is it interpreted... Problem 3E: Determine whether graph is a function. Use the graph to determine whether z is a function of x and... Problem 4E: Contour Map Explain how to sketch a contour map of a function of x and y. Problem 5E: Determining Whether an Equation Is a Function In Exercises 5-8. determine whether z is a function of... Problem 6E: Determining Whether an Equation Is a Function In Exercises 5-8. determine whether z is a function of... Problem 7E: Determining Whether an Equation Is a Function In Exercises 5-8, determine whether z is a function of... Problem 8E: Determining Whether an Equation Is a Function In Exercises 5-8, determine whether z is a function of... Problem 9E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 10E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 11E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 12E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 13E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 14E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 15E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 16E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 17E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 18E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 19E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 20E: Evaluating a Function In Exercises 9-20, evaluate the function at the given values of the... Problem 21E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 22E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 23E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 24E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 25E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 26E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 27E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 28E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 29E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 30E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 31E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 32E: Finding the Domain and Range of a Function In Exercises 21-32, find the domain and range of the... Problem 33E: Think About It The graphs labeled (a), (b). (c). and (d) are graphs of the function... Problem 34E Problem 35E Problem 36E Problem 37E: Sketching a Surface In Exercises 35-42, describe and sketch the surface given by the function.... Problem 38E Problem 39E Problem 40E Problem 41E Problem 42E: Sketching a Surface In Exercises 35-42, describe and sketch the surface given by the function.... Problem 43E: Graphing a Function Using Technology In Exercises 43-46, use a computer algebra system to graph the... Problem 44E: Graphing a Function Using Technology In Exercises 43-46, use a computer algebra system to graph the... Problem 45E: Graphing a Function Using Technology In Exercises 43-46, use a computer algebra system to graph the... Problem 46E: Graphing a Function Using Technology In Exercises 43-46, use a computer algebra system to graph the... Problem 47E: Matching In Exercises 47-50, match the graph of the surface with one of the contour maps. [The... Problem 48E: Matching In Exercises 47-50, match the graph of the surface with one of the contour maps. [The... Problem 49E: Matching In Exercises 47-50, match the graph of the surface with one of the contour maps. [The... Problem 50E: Matching In Exercises 47-50, match the graph of the surface with one of the contour maps. [The... Problem 51E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 52E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 53E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 54E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 55E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 56E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 57E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 58E: Sketching a Contour Map In Exercises 51-58, describe the level curves of the function. Sketch a... Problem 59E: Graphing Level Curves Using Technology In Exercises 59- 62. use a graphing utility to graph six... Problem 60E: Graphing Level Curves Using Technology In Exercises 59- 62. use a graphing utility to graph six... Problem 61E: Graphing Level Curves Using Technology In Exercises 59-62. use a graphing utility to graph six level... Problem 62E: Graphing Level Curves Using Technology In Exercises 59-62. use a graphing utility to graph six level... Problem 63E: Vertical Line Test Does die Vertical Line Test apply to functions of two variables? Explain your... Problem 64E: Using Level Curves All of the level curves of the surface given by z=f(x,y) are concentric circles.... Problem 65E: Creating a Function Construct a function whose level curves arc lines passing through lire origin. Problem 66E: Conjecture Consider the function f(x,y)=xy, for x0andy0. (a) Sketch die graph of the surface given... Problem 67E: Writing In Exercises 67 and 68, use the graphs of the level curves ( c-values evenly spaced) of the... Problem 68E: Writing In Exercises 67 and 68, use the graphs of the level curves ( c - values evenly spaced) of... Problem 69E: Investment In 2016, an investment of S1000 was made in a bond earning 6% compounded annually. Assume... Problem 70E: Investment A principal of $5000 is deposited in a savings account that earns interest at a rate of r... Problem 71E: Sketching a Level Surface In Exercises 71-76. describe and sketch the graph of the level surface... Problem 72E: Sketching a Level Surface In Exercises 71-76. describe and sketch the graph of the level surface... Problem 73E: Sketching a Level Surface In Exercises 71-76. describe and sketch the graph of the level surface... Problem 74E: Sketching a Level Surface In Exercises 71-76. describe and sketch the graph of the level surface... Problem 75E: Sketching a Level Surface In Exercises 71-76. describe and sketch the graph of the level surface... Problem 76E: Sketching a Level Surface In Exercises 71-76. describe and sketch the graph of the level surface... Problem 77E: Forestry The Doyle Lux Rule is one of several methods used to determine the lumber yield of a log... Problem 78E: Queuing Model The average length of time that a customer waits in line for service is W(x,y)=1xy,xy... Problem 79E: Temperature Distribution The temperature T (in degrees Celsius) at any point (x, y) on a circular... Problem 80E: Electric Potential The electric potential V at any point (x,y) is V(x,y)=525+x2+y2. Sketch the... Problem 81E Problem 82E: Cobb-Douglas Production Function In Exercises 81 and 82, use the Cobb-Douglas production function to... Problem 83E Problem 84E: Cobb-Douglas Production Function Show that the Cobb-Douglas production function z=Cxay1a can be... Problem 85E: Ideal Gas Law According to the Ideal Gas Law, PV= kT, where P is pressure, V is volume, T is... Problem 86E Problem 87E Problem 88E: Acid Rain The acidity of rainwater is measured in units called pH. A pH of 7 is neutral, smaller... Problem 89E Problem 90E: HOW DO YOU SEE IT? The contour map of the Southern Hemisphere shown in the figure was computer... Problem 91E Problem 92E Problem 93E Problem 94E Problem 95E format_list_bulleted