Operations on Functions, Composition of Functions, and Solve Inverses Review

Composition of Functions

100

f(x)=x-4

g(x)=3x²+6x+9

Find: (f∘g)(x)

3x²+6x+5

200

f(x)=-x-5

g(x)=x²-6x+13

Find: (f∘g)(x)

-x²+6x-18

300

f(x)=x²+x+8

g(x)=3x+5

Find: f(g(x))

9x²+33x+38

400

f(x)=2x²-4x-6

g(x)=2x+7

Find: f(g(x))

8x²+48x+64

500

f(x)=2x²-5x-12

g(x)=-2x+2

Find: (f∘g)(x)

8x²-6x-14

Evaluate Composition of Functions

100

f(x)=x²+5x-10

g(x)=4x-2

Find: f(g(1))

4

200

f(x)=2x-8

g(x)=x²+7x+9

Find: (g∘f)(2)

-3

300

f(x)=2x-4

g(x)=2x²+4x-8

Find: f(g(-4))

12

400

f(x)=3x²-2x+2

g(x)=-2x-8

Find: (f∘g)(-5)

10

500

f(x)=2x²+2x-3

g(x)=-5x+3

Find: (g∘f)(0)

18

Solve Inverse Functions

100

f(x)=6(x-3)

Find: f^-1(x)

f^-1(x)=x/6 +3

200

f(x)=√ x+2

Find: f^-1(x)

f^-1(x)=x²-2

300

f(x)=(x-10)/9

Find: f^-1(x)

f^-1(x)=9x+10

400

f(x)=⁵√x+2

Find: f^-1(x)

f^-1(x)=x⁵-2

500

f(x)=x³+6

Find: f^-1(x)

f^-1(x)=³√x-6

Riddles

100

What is red and smells like paint?

Red Paint!

200

What can you catch but not throw?

A cold!

300

What asks no questions but must be answered?

A phone!

400

What has One head, one foot, and four legs?

A bed!

500

What runs around the yard without moving?

A fence!