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Beginning and Intermediate Algebra

Sherri Messersmith

Chapter 13

Inverse, Exponential, and Logarithmic Functions - all with Video Answers

Educators


Section 1

Inverse Functions

00:54

Problem 1

Determine whether each function is one-to-one. If it is one-to-one, find its inverse.
$$f=\{(-4,3),(-2,-3),(2,-3),(6,13)\}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:17

Problem 2

Determine whether each function is one-to-one. If it is one-to-one, find its inverse.
$$g=\{(0,-7),(1,-6),(4,-5),(25,-2)\}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:04

Problem 3

Determine whether each function is one-to-one. If it is one-to-one, find its inverse.
$$h=\{(-5,-16),(-1,-4),(3,8)\}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:12

Problem 4

Determine whether each function is one-to-one. If it is one-to-one, find its inverse.
$$f=\{(-6,3),(-1,8),(4,3)\}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:10

Problem 5

Determine whether each function is one-to-one. If it is one-to-one, find its inverse.
$$g=\{(2,1),(5,2),(7,14),(10,19)\}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:30

Problem 6

Determine whether each function is one-to-one. If it is one-to-one, find its inverse.
$$h=\{(-1,4),(0,-2),(5,1),(9,4)\}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:56

Problem 7

Determine whether each function is one-to-one.
The table shows the average temperature during selected months in Tulsa, Oklahoma. The function matches each month with the average temperature, in 'F. Is it one-to-one?

Jessica Delaus
Jessica Delaus
Numerade Educator
01:57

Problem 8

Determine whether each function is one-to-one.
The table shows some NCAA conferences and the number of schools in the conference. The function matches each conference with the number of schools it contains. Is it one-to-one?

Jessica Delaus
Jessica Delaus
Numerade Educator
00:47

Problem 9

Do all functions have inverses? Explain your answer.

Jessica Delaus
Jessica Delaus
Numerade Educator
02:18

Problem 10

What test can be used to determine whether the graph of a function has an inverse?

Jessica Delaus
Jessica Delaus
Numerade Educator
01:22

Problem 11

Determine whether each statement is true or false. If it is false, rewrite the statement so that it is true.
$f^{-1}(x)$ is read as " $f$ to the negative one of $x$ "."

Jessica Delaus
Jessica Delaus
Numerade Educator
00:26

Problem 12

Determine whether each statement is true or false. If it is false, rewrite the statement so that it is true.
If $f^{-1}$ is the inverse of $f$, then $\left(f^{-1} \circ f\right)(x)=x$ and $\left(f \circ f^{-1}\right)(x)=x$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:22

Problem 13

Determine whether each statement is true or false. If it is false, rewrite the statement so that it is true.
The domain of $f$ is the range of $f^{-1}$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:02

Problem 14

Determine whether each statement is true or false. If it is false, rewrite the statement so that it is true.
If $f$ is one-to-one and $(5,9)$ is on the graph of $f,$ then $(-5,-9)$ is on the graph of $f^{-1}$

Jessica Delaus
Jessica Delaus
Numerade Educator
00:54

Problem 15

Determine whether each statement is true or false. If it is false, rewrite the statement so that it is true.
The graphs of $f(x)$ and $f^{-1}(x)$ are symmetric with respect to the $x$ -axis.

Jessica Delaus
Jessica Delaus
Numerade Educator
00:45

Problem 16

Determine whether each statement is true or false. If it is false, rewrite the statement so that it is true.
Let $f(x)$ be one-to-one. If $f(7)=2,$ then $f^{-1}(2)=7$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:18

Problem 17

For each function graphed here, answer the following.
a) Determine whether it is one-to-one.
b) If it is one-to-one, graph its inverse.

Jessica Delaus
Jessica Delaus
Numerade Educator
02:31

Problem 18

For each function graphed here, answer the following.
a) Determine whether it is one-to-one.
b) If it is one-to-one, graph its inverse.

Jessica Delaus
Jessica Delaus
Numerade Educator
01:03

Problem 19

For each function graphed here, answer the following.
a) Determine whether it is one-to-one.
b) If it is one-to-one, graph its inverse.

Jessica Delaus
Jessica Delaus
Numerade Educator
03:09

Problem 20

For each function graphed here, answer the following.
a) Determine whether it is one-to-one.
b) If it is one-to-one, graph its inverse.

Jessica Delaus
Jessica Delaus
Numerade Educator
02:38

Problem 21

For each function graphed here, answer the following.
a) Determine whether it is one-to-one.
b) If it is one-to-one, graph its inverse.

Jessica Delaus
Jessica Delaus
Numerade Educator
01:10

Problem 22

For each function graphed here, answer the following.
a) Determine whether it is one-to-one.
b) If it is one-to-one, graph its inverse.

Jessica Delaus
Jessica Delaus
Numerade Educator
03:06

Problem 23

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$g(x)=x-6$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:58

Problem 24

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$h(x)=x+3$$

Stephanie Krauskopf
Stephanie Krauskopf
Numerade Educator
03:46

Problem 25

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$f(x)=-2 x+5$$

Stephanie Krauskopf
Stephanie Krauskopf
Numerade Educator
04:31

Problem 26

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$g(x)=4 x-9$$

Stephanie Krauskopf
Stephanie Krauskopf
Numerade Educator
02:55

Problem 27

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$g(x)=\frac{1}{2} x$$

Stephanie Krauskopf
Stephanie Krauskopf
Numerade Educator
03:17

Problem 28

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$h(x)=-\frac{1}{3} x$$

Stephanie Krauskopf
Stephanie Krauskopf
Numerade Educator
04:16

Problem 29

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$f(x)=x^{3}$$

Stephanie Krauskopf
Stephanie Krauskopf
Numerade Educator
06:25

Problem 30

Find the inverse of each one-to-one function. Then, graph the function and its inverse on the same axes.
$$g(x)=\sqrt[3]{x}+4$$

Stephanie Krauskopf
Stephanie Krauskopf
Numerade Educator
01:40

Problem 31

Find the inverse of each one-to-one function.
$$f(x)=2 x-6$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:03

Problem 32

Find the inverse of each one-to-one function.
$$g(x)=-4 x+8$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:49

Problem 33

Find the inverse of each one-to-one function.
$$h(x)=-\frac{3}{2} x+4$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:34

Problem 34

Find the inverse of each one-to-one function.
$$f(x)=\frac{2}{5} x+1$$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:34

Problem 35

Find the inverse of each one-to-one function.
$$g(x)=\sqrt[3]{x+2}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:35

Problem 36

Find the inverse of each one-to-one function.
$$h(x)=\sqrt[3]{x-7}$$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:41

Problem 37

Find the inverse of each one-to-one function.
$$f(x)=\sqrt{x}, x \geq 0$$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:06

Problem 38

Find the inverse of each one-to-one function.
$$g(x)=\sqrt{x+3}, x \geq-3$$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:33

Problem 39

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=5 x-2$
a) $f(1)$
b) $f^{-1}(3)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:25

Problem 40

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=3 x+7$
a) $f(-4)$
b) $f^{-1}(-5)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:29

Problem 41

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=-\frac{1}{3} x+5$
a) $f(9)$
b) $\quad f^{-1}(2)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:26

Problem 42

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=\frac{1}{2} x-1$
a) $f(6)$
b) $f^{-1}(2)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:47

Problem 43

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=-x+3$
a) $f(-7)$
b) $f^{-1}(10)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:49

Problem 44

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=-\frac{5}{4} x+2$
a) $f(8)$
b) $f^{-1}(-8)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:30

Problem 45

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=2^{x}$
a) $f(3)$
b) $f^{-1}(8)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:26

Problem 46

Given the one-to-one function $f(x)$, find the function values without finding the equation of $f^{-1}(x) .$ Find the value in a) before b).
$f(x)=3^{x}$
a) $f(-2)$
b) $f^{-1}\left(\frac{1}{9}\right)$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:35

Problem 47

If $f(x)=x+9,$ show that $f^{-1}(x)=x-9$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:26

Problem 48

If $f(x)=x-12,$ show that $f^{-1}(x)=x+12$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:34

Problem 49

If $f(x)=-6 x+4,$ show that $f^{-1}(x)=-\frac{1}{6} x+\frac{2}{3}$

Jessica Delaus
Jessica Delaus
Numerade Educator
03:03

Problem 50

If $f(x)=-\frac{1}{7} x+\frac{2}{7},$ show that $f^{-1}(x)=-7 x+2$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:21

Problem 51

If $f(x)=\frac{3}{2} x-9,$ show that $f^{-1}(x)=\frac{2}{3} x+6$

Jessica Delaus
Jessica Delaus
Numerade Educator
02:35

Problem 52

If $f(x)=-\frac{5}{8} x+10,$ show that $f^{-1}(x)=-\frac{8}{5} x+16$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:51

Problem 53

If $f(x)=\sqrt[3]{x-10},$ show that $f^{-1}(x)=x^{3}+10$

Jessica Delaus
Jessica Delaus
Numerade Educator
01:55

Problem 54

If $f(x)=x^{3}-1,$ show that $f^{-1}(x)=\sqrt[3]{x+1}$

Jessica Delaus
Jessica Delaus
Numerade Educator