# Functions

#### thisishard

Okay. I have done all these problems and I would like it if some one put all the answers up so i can see if i'm right(Nerd)

Find g[h(x)] and h[g(x)]
1.g(x)=x+4
h(x)=x+9

2. g(x)=|x|
h(x)= x - 3

3.g(x)=x^2-4
h(x)=x+1

if f(x) =x^2, g(x)=3x, and h(x) = x-1 find each of the following
4. g[f(x)]

5.[f o h](3)

6.[f o h](-2)

Find the inverse of each function
7. I already know I got 7 right

8. g(x)= (-3x+1)/2

9. h(x) = 4x^2 +12x + 9

Are the following functions inverses

10. f(x) = (2x-8)/2

11. g(x) = x +4
(Cool)

#### skeeter

MHF Helper
Okay. I have done all these problems and I would like it if some one put all the answers up so i can see if i'm right(Nerd)

Find g[h(x)] and h[g(x)]
1.g(x)=x+4
h(x)=x+9

2. g(x)=|x|
h(x)= x - 3

3.g(x)=x^2-4
h(x)=x+1

if f(x) =x^2, g(x)=3x, and h(x) = x-1 find each of the following
4. g[f(x)]

5.[f o h](3)

6.[f o h](-2)

Find the inverse of each function
7. I already know I got 7 right

8. g(x)= (-3x+1)/2

9. h(x) = 4x^2 +12x + 9

Are the following functions inverses

10. f(x) = (2x-8)/2

11. g(x) = x +4
(Cool)
Sorry, but that's not the way it works here at MHF ... why don't you post your "answers" so someone may check them?

• Plato