Getting Information from a Graph A graph of a function f is given. (a) Find f(-2) and f(2). (b) Find the net change and the average rate of change of f between x = -2 and x = 2. (c) Find the domain and range of f. (d) On what intervals is f increasing? On what intervals is f decreasing? (e) What are the local maximum values of f? (1) Is f one-to-one?

Getting Information from a Graph A graph of a function f is given. (a) Find f(-2) and f(2). (b) Find the net change and the average rate of change of f between x = -2 and x = 2. (c) Find the domain and range of f. (d) On what intervals is f increasing? On what intervals is f decreasing? (e) What are the local maximum values of f? (1) Is f one-to-one?

College Algebra

7th Edition

ISBN:9781305115545

Author:James Stewart, Lothar Redlin, Saleem Watson

Publisher:James Stewart, Lothar Redlin, Saleem Watson

Chapter2: Functions

Section: Chapter Questions

Problem 12E: Getting Information from a Graph A graph of a function f is given. (a) Find f(2) and f(2) . (b) Find...

See similar textbooks

Similar questions

Maximum Sales Growth This is a continuation of Exercise 10. In this exercise, we determine how the sales level that gives the maximum growth rate is related to the limit on sales. Assume, as above, that the constant of proportionality is 0.3, but now suppose that sales grow to a level of 4 thousand dollars in the limit. a. Write an equation that shows the proportionality relation for G. b. On the basis of the equation from part a, make a graph of G as a function of s. c. At what sales level is the growth rate as large as possible? d. Replace the limit of 4 thousand dollars with another number, and find at what sales level the growth rate is as large as possible. What is the relationship between the limit and the sales level that gives the largest growth rate? Does this relationship change if the proportionality constant is changed? e. Use your answers in part d to explain how to determine the limit if we are given sales data showing the sales up to a point where the growth rate begins to decrease.
Sales Growth In this exercise, we develop a model for the growth rate G, in thousands of dollars per year, in sales of the product as a function of the sales level s, in thousands of dollars. The model assumes that there is a limit to the total amount of sales that can be attained. In this situation, we use the term unattained sales for difference this limit and the current sales level. For example, if we expect sales grow to 3 thousand dollars in the long run, then 3-s is the unattained sales. The model states that the growth rate G is proportional to the product of the sales level s, and the unattained sales. Assume that the constant of proportionality is 0.3 and that the sales grow to 2 thousand dollars in the long run. a.Find the formula for unattained sales. b.Write an equation that shows the proportionality relation for G. c.On the basis of the equation from the part b, make a graph of G as a function of s. d.At what sales level is the growth rate as large as possible? e.What is the largest possible growth rate?
Changing Water Levels: The graph shows the depth of water Win a reservoir over a one-year period as a function of the number of days xsince the beginning of the year. (a) Determine the intervals on which the function W is increasing and on which it is decreasing. (b) At what value of x does W achieve a local maximum? A local minimum? (c) Find the net change in the depth W from 100 days to 300 days
Population Growth and Decline The graph shows the population P in a small industrial city from 1950 to 2000. Thevariable x represents the number of year since 1950. (a) Determine the intervals on which the function P isincreasing and on which it is decreasing. (b) What as the maximum population, and in what yearwas it attained? (c) Find the net change in the population P from 1970 to 1990.
Getting Information from a Graph A graph of a function f is given. (a) Find f(2) and f(2) . (b) Find the rad change and the aver4age rate of change of f between x=2 and x=2 . (c) Find the domain and range of f . (d) On what intervals is f increasing? On what intervals is f decreasing? (e) What arc the local maximum values of f ? (f) Is f one-to-one?
Minimizing a Distance When we seek a minimum or maximum value of a function, it is sometimes easier to work with a simpler function instead. Suppose g(x)=f(x) where f(x)0 for all x. Explain why the local minima and maxima of f and g occur at the same values of x. Let gx be the distance between the point 3,0 and the point (x,x2) on the graph of the parabola y=x2. Express g as a function of x. Find the minimum value of the function g that you found in part b. Use the principle described in part a to simplify your work.
Learning Curve A learning curve is a graph of a function P(t) that measures the performance of someone learning a skill as a function of the training time t. At first, the rate of learning is rapid. Then, as performance increases and approaches a maximal value M, the rate of learning decreases. It has been found that the function P(t)=MCekt where k and C are positive constants and CM is a reasonable model for learning. a Express the learning time t as a function of the performance level P. b For s pole-vaulter in training, the learning curve is given by P(t)=2014e0.024t where P(t) is the height he is able to pole-vault after t months. After how many months of training is he able to vault 12 ft? c Draw a graph of the learning curve in part b.
Determine whether the function is increasing ordecreasing. g(x)=x+2
Formula for Maximum and Minimum Values Find the maximum or minimum value of the function. f(s)=s21.2s+16