Question

Someone please help me!!
For the given functions f and g, find the requested composite function value.
f(x)=x-6/x, g(x)=x^2+9; Find (g o f) (-2)

Answer 1

Do you know what (g o f)(x) means? c:

Answer 2

No.

Answer 3

(g o f)(x) means g(f(x))

Answer 4

You can think of the circle as the word "of"

Answer 5

So in our case (g o f)(x)=g(f(x))=(x-6/x)^2+9. You just take f(x) and plug it into g(x).

Answer 6

Then you plug in the value of -2 since it asks for (g o f)(-2), and -2=x.

Answer 7

Cheers! :3

Answer 8

okay, so I still don't understand.

Answer 9

Just take -2 and plug it into (x-6/x)^2+9

Answer 10

it gives an answer of 25