Question

Composition of Functions:
f(x) {(3,2),(5,2),(7,4),(9,3),(11,5)}
g(x) {(1,3),(2,5),(3,7),(4,9),(5,11)}

Answer 1

What is f(g(3)) ?

Answer 2

@satellite73 @Hero

Answer 3

Which do you believe is the correct answer?

Answer 4

no i have to compose it

Answer 5

I know what you have to do bro. I asked you a simple question to see, if perhaps, you have already attempted to solve it.

Answer 6

With these ordered pairs, the first number is the input, the second number is the output.

Answer 7

No actuallly i don't remember the method, nor can i find it in my textbook : /

Answer 8

so what is the output of g(3)?

Answer 9

is it 7?

Answer 10

Yes, that is correct. So, in other words g(3) = 7

Answer 11

So now you replace g(3) with 7:

f(g(3)) = f(7)
So what is the output of f(7) if x = 7 is the input?

Answer 12

4 ?

Answer 13

Yup, it was that easy.

Answer 14

ohh, so now do i have to continue this for each one

Answer 15

Good luck with it bro.

Answer 16

@Hero (f-g)(x)
how would i solve that ?

Answer 17

(f - g)(x) = f(x) - g(x)