Writing In Exercises 4952, use a graphing utility to graph the function and estimate the

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. y12

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. y12x

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. 12x

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. 12x3

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. 2x3y

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. x3y

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. 3y13

In Exercises 18, complete the table and use the result to estimate the limit. Use a graphing utility to graph the function to confirm your result. 3y13x

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. y13x

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. 13xy

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. 13xy

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. xy2

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. y23

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. y23x

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. 23x

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. 23x4

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. 3x4y

In Exercises 918, use the graph to find the limit (if it exists). If the limit does not exist, explain why. x4y2

In Exercises 19 and 20, use the graph of the function to decide whether the value of the given quantity exists. If it does, find it. If not, explain why 4y2

In Exercises 19 and 20, use the graph of the function to decide whether the value of the given quantity exists. If it does, find it. If not, explain why 4y28

In Exercises 21 and 22, use the graph of to identify the values of for which exists. y28x

In Exercises 21 and 22, use the graph of to identify the values of for which exists. 28x

In Exercises 23 and 24, sketch the graph of Then identify the values of for which exists. 8x3

In Exercises 23 and 24, sketch the graph of Then identify the values of for which exists. 8x3y

In Exercises 25 and 26, sketch a graph of a function that satisfies the given values. (There are many correct answers.) x3y2

In Exercises 25 and 26, sketch a graph of a function that satisfies the given values. (There are many correct answers.) 3y2

Modeling Data The cost of a telephone call between two cities is $0.75 for the first minute and $0.50 for each additional minute or fraction thereof. A formula for the cost is given by where is the time in minutes. Note: greatest integer such that For example, and (a) Use a graphing utility to graph the cost function for (b) Use the graph to complete the table and observe the behavior of the function as approaches 3.5. Use the graph and the table to find (c) Use the graph to complete the table and observe the behavior of the function as approaches 3. Does the limit of as approaches 3 exist? Explain. 3y26

Repeat Exercise 27 for y26x

The graph of is shown in the figure. Find such that if then 26x2

The graph of is shown in the figure. Find such that if then 6x2

The graph of is shown in the figure. Find such that if then 6x24

The graph of is shown in the figure. Find such that if then x24y

In Exercises 3336, find the limit Then find such that whenever 24y2

In Exercises 3336, find the limit Then find such that whenever 4y2

In Exercises 3336, find the limit Then find such that whenever 4y24

In Exercises 3336, find the limit Then find such that whenever y24y

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 24y2

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 4y2

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 4y2x

In Exercises 3748, find the limit Then use the - definition to prove that the limit is y2x

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 2x9

In Exercises 3748, find the limit Then use the - definition to prove that the limit is x9y

In Exercises 3748, find the limit Then use the - definition to prove that the limit is x9y

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 9y

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 9y6

In Exercises 3748, find the limit Then use the - definition to prove that the limit is y6

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 6x

In Exercises 3748, find the limit Then use the - definition to prove that the limit is 6x

Writing In Exercises 4952, use a graphing utility to graph the function and estimate the limit (if it exists). What is the domain of the function? Can you detect a possible error in determining the domain of a function solely by analyzing the graph generated by a graphing utility? Write a short paragraph about the importance of examining a function analytically as well as graphically. 6xy

Writing In Exercises 4952, use a graphing utility to graph the function and estimate the limit (if it exists). What is the domain of the function? Can you detect a possible error in determining the domain of a function solely by analyzing the graph generated by a graphing utility? Write a short paragraph about the importance of examining a function analytically as well as graphically. xy

Writing In Exercises 4952, use a graphing utility to graph the function and estimate the limit (if it exists). What is the domain of the function? Can you detect a possible error in determining the domain of a function solely by analyzing the graph generated by a graphing utility? Write a short paragraph about the importance of examining a function analytically as well as graphically. xy6

Writing In Exercises 4952, use a graphing utility to graph the function and estimate the limit (if it exists). What is the domain of the function? Can you detect a possible error in determining the domain of a function solely by analyzing the graph generated by a graphing utility? Write a short paragraph about the importance of examining a function analytically as well as graphically. y6

Write a brief description of the meaning of the notation y6

If can you conclude anything about the limit of as approaches 2? Explain your reasoning. 6x

If can you conclude anything about the limit of as approaches 2? Explain your reasoning. 6x

Identify three types of behavior associated with the nonexistence of a limit. Illustrate each type with a graph of a function. xy

Jewelry A jeweler resizes a ring so that its inner circumference is 6 centimeters. (a) What is the radius of the ring? (b) If the rings inner circumference can vary between 5.5 centimeters and 6.5 centimeters, how can the radius vary? (c) Use the - definition of limit to describe this situation. xy

Sports A sporting goods manufacturer designs a golf ball having a volume of 2.48 cubic inches. (a) What is the radius of the golf ball? (b) If the balls volume can vary between 2.45 cubic inches and 2.51 cubic inches, how can the radius vary? (c) Use the - definition of limit to describe this situation. Identify xy10

Consider the function Estimate the limit by evaluating at values near 0. Sketch the graph of y10x

Consider the function Estimate y10x2

Graphical Analysis The statement means that for each there corresponds a such that if then If then Use a graphing utility to graph each side of this inequality. Use the zoom feature to find an interval such that the graph of the left side is below the graph of the right side of the inequality. 10x2

Graphical Analysis The statement means that for each there corresponds a such that if then If then Use a graphing utility to graph each side of this inequality. Use the zoom feature to find an interval such that the graph of the left side is below the graph of the right side of the inequality. 10x21

True or False? In Exercises 6366, determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. x21y

True or False? In Exercises 6366, determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. 21y

True or False? In Exercises 6366, determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. 1y1

True or False? In Exercises 6366, determine whether the statement is true or false. If it is false, explain why or give an example that shows it is false. 1y1x

Consider the function (a) Is a true statement? Explain. (b) Is a true statement? Explain y1xx

Writing The definition of limit on page 52 requires that is a function defined on an open interval containing except possibly at Why is this requirement necessary? 1xx

Prove that if the limit of as exists, then the limit must be unique. [Hint: Let and and prove that 1xxy

Consider the line where Use the definition of limit to prove that xxy2

Prove that is equivalent to xy2

(a) Given that prove that there exists an open interval containing 0 such that for all in (b) Given that where prove that there exists an open interval containing such that for all y24

Programming Use the programming capabilities of a graphing utility to write a program for approximating Assume the program will be applied only to functions whose limits exist as approaches Let and generate two lists whose entries form the ordered pairs for and y24x

Programming Use the program you created in Exercise 73 to approximate the limit 24x

Inscribe a rectangle of base and height and an isosceles triangle of base in a circle of radius one as shown. For what value of do the rectangle and triangle have the same area? 4xy

A right circular cone has base of radius 1 and height 3. A cube is inscribed in the cone so that one face of the cube is contained in the base of the cone. What is the side-length of the cube? 4xy3