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Intermediate Algebra

Lynn Marecek

Chapter 10

Exponential and Logarithmic Functions - all with Video Answers

Educators


Section 1

Finding Composite and Inverse Functions

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Problem 1

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=4 x+3$ and $g(x)=2 x+5$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 2

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=3 x-1$ and $g(x)=5 x-3$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 3

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=6 x-5$ and $g(x)=4 x+1$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 4

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=2 x+7$ and $g(x)=3 x-4$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 5

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=3 x$ and $g(x)=2 x^2-3 x$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 6

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=2 x$ and $g(x)=3 x^2-1$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 7

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=2 x-1$ and $g(x)=x^2+2$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 8

In the following exercises, find (a) $(f \circ g)(x),(b)(g \circ f)(x)$, and $(c)(f \cdot g)(x)$.
$f(x)=4 x+3$ and $g(x)=x^2-4$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 9

In the following exercises, find the values described.
For functions $f(x)=2 x^2+3$ and $g(x)=5 x-1$, find
(a) $(f \circ g)(-2)$
(b) $(g \circ f)(-3)$
(c) $(f \circ f)(-1)$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 10

In the following exercises, find the values described.
For functions $f(x)=5 x^2-1$ and $g(x)=4 x-1$, find
(a) $(f \circ g)(1)$
(b) $(g \circ f)(-1)$
(c) $(f \circ f)(2)$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 11

In the following exercises, find the values described.
For functions $f(x)=2 x^3$ and $g(x)=3 x^2+2$, find
(a) $(f \circ g)(-1)$
(b) $(g \circ f)(1)$
(c) $(g \circ g)(1)$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 12

In the following exercises, find the values described.
For functions $f(x)=3 x^3+1$ and $g(x)=2 x^2-3$, find
(a) $(f \circ g)(-2)$
(b) $(g \circ f)(-1)$
(c) $(g \circ g)(1)$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 13

In the following exercises, determine if the set of ordered pairs represents a function and if so, is the function one-to-one.
$\{(-3,9),(-2,4),(-1,1),(0,0)$. $(1,1),(2,4),(3,9)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 14

In the following exercises, determine if the set of ordered pairs represents a function and if so, is the function one-to-one.
$\{(9,-3),(4,-2),(1,-1),(0,0)$, $(1,1),(4,2),(9,3)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 15

In the following exercises, determine if the set of ordered pairs represents a function and if so, is the function one-to-one.
$\{(-3,-5),(-2,-3),(-1,-1)$. $(0,1),(1,3),(2,5),(3,7)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 16

In the following exercises, determine if the set of ordered pairs represents a function and if so, is the function one-to-one.
$\{(5,3),(4,2),(3,1),(2,0)$. $(1,-1),(0,-2),(-1,-3)\}$

Victor Salazar
Victor Salazar
Numerade Educator
01:07

Problem 17

In the following exercises, determine whether each graph is the graph of a function and if so, is it one-to-one.
Graph a-b can't copy

Caleb Wood
Caleb Wood
Numerade Educator
01:07

Problem 18

In the following exercises, determine whether each graph is the graph of a function and if so, is it one-to-one.
Graph a-b can't copy

Caleb Wood
Caleb Wood
Numerade Educator
01:07

Problem 19

In the following exercises, determine whether each graph is the graph of a function and if so, is it one-to-one.
Graph a-b can't copy

Caleb Wood
Caleb Wood
Numerade Educator
01:07

Problem 20

In the following exercises, determine whether each graph is the graph of a function and if so, is it one-to-one.
Graph a-b can't copy

Caleb Wood
Caleb Wood
Numerade Educator
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Problem 21

In the following exercises, find the inverse of each function. Determine the domain and range of the inverse function.
$\{(2,1),(4,2),(6,3),(8,4)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 22

In the following exercises, find the inverse of each function. Determine the domain and range of the inverse function.
$\{(6,2),(9,5),(12,8),(15,11)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 23

In the following exercises, find the inverse of each function. Determine the domain and range of the inverse function.
$\{(0,-2),(1,3),(2,7),(3,12)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 24

In the following exercises, find the inverse of each function. Determine the domain and range of the inverse function.
$\{(0,0),(1,1),(2,4),(3,9)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 25

In the following exercises, find the inverse of each function. Determine the domain and range of the inverse function.
$\{(-2,-3),(-1,-1),(0,1),(1,3)\}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 26

In the following exercises, find the inverse of each function. Determine the domain and range of the inverse function.
$\{(5,3),(4,2),(3,1),(2,0)\}$

Victor Salazar
Victor Salazar
Numerade Educator
00:47

Problem 27

In the following exercises, graph, on the same coordinate system, the inverse of the one-to-one function shown.
Graph can't copy

AG
Ankit Gupta
Numerade Educator
00:47

Problem 28

In the following exercises, graph, on the same coordinate system, the inverse of the one-to-one function shown.
Graph can't copy

AG
Ankit Gupta
Numerade Educator
00:47

Problem 29

In the following exercises, graph, on the same coordinate system, the inverse of the one-to-one function shown.
Graph can't copy

AG
Ankit Gupta
Numerade Educator
00:47

Problem 30

In the following exercises, graph, on the same coordinate system, the inverse of the one-to-one function shown.
Graph can't copy

AG
Ankit Gupta
Numerade Educator
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Problem 31

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=x+8$ and $g(x)=x-8$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 32

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=x-9$ and $g(x)=x+9$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 33

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=7 x$ and $g(x)=\frac{x}{7}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 34

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=\frac{x}{11}$ and $g(x)=11 x$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 35

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=7 x+3$ and $g(x)=\frac{x-3}{7}$

Victor Salazar
Victor Salazar
Numerade Educator
View

Problem 36

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=5 x-4$ and $g(x)=\frac{x-4}{5}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 37

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=\sqrt{x+2}$ and $g(x)=x^2-2$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 38

In the following exercises, determine whether or not the given functions are inverses.
$f(x)=\sqrt[3]{x-4}$ and $g(x)=x^3+4$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 39

In the following exercises, find the inverse of each function.
$f(x)=x-12$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 40

In the following exercises, find the inverse of each function.
$f(x)=x+17$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 41

In the following exercises, find the inverse of each function.
$f(x)=9 x$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 42

In the following exercises, find the inverse of each function.
$f(x)=8 x$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 43

In the following exercises, find the inverse of each function.
$f(x)=\frac{x}{6}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 44

In the following exercises, find the inverse of each function.
$f(x)=\frac{x}{4}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 45

In the following exercises, find the inverse of each function.
$f(x)=6 x-7$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 46

In the following exercises, find the inverse of each function.
$f(x)=7 x-1$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 47

In the following exercises, find the inverse of each function.
$f(x)=-2 x+5$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 48

In the following exercises, find the inverse of each function.
$f(x)=-5 x-4$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 49

In the following exercises, find the inverse of each function.
$f(x)=x^2+6, \quad x \geq 0$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 50

In the following exercises, find the inverse of each function.
$f(x)=x^2-9, \quad x \geq 0$

Victor Salazar
Victor Salazar
Numerade Educator
View

Problem 51

In the following exercises, find the inverse of each function.
$f(x)=x^3-4$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 52

In the following exercises, find the inverse of each function.
$f(x)=x^3+6$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 53

In the following exercises, find the inverse of each function.
$f(x)=\frac{1}{x+2}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 54

In the following exercises, find the inverse of each function.
$f(x)=\frac{1}{x-6}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 55

In the following exercises, find the inverse of each function.
$f(x)=\sqrt{x-2}, \quad x \geq 2$

Victor Salazar
Victor Salazar
Numerade Educator
View

Problem 56

In the following exercises, find the inverse of each function.
$f(x)=\sqrt{x+8}, \quad x \geq-8$

Victor Salazar
Victor Salazar
Numerade Educator
View

Problem 57

In the following exercises, find the inverse of each function.
$f(x)=\sqrt[3]{x-3}$

Victor Salazar
Victor Salazar
Numerade Educator
View

Problem 58

In the following exercises, find the inverse of each function.
$f(x)=\sqrt[3]{x+5}$

Victor Salazar
Victor Salazar
Numerade Educator
View

Problem 59

In the following exercises, find the inverse of each function.
$f(x)=\sqrt[4]{9 x-5}, \quad x \geq \frac{5}{9}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 60

In the following exercises, find the inverse of each function.
$f(x)=\sqrt[4]{8 x-3}, \quad x \geq \frac{3}{8}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 61

In the following exercises, find the inverse of each function.
$f(x)=\sqrt[5]{-3 x+5}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 62

In the following exercises, find the inverse of each function.
$f(x)=\sqrt[5]{-4 x-3}$

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 63

Explain how the graph of the inverse of a function is related to the graph of the function.

Victor Salazar
Victor Salazar
Numerade Educator
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Problem 64

Explain how to find the inverse of a function from its equation. Use an example to demonstrate the steps.

Victor Salazar
Victor Salazar
Numerade Educator