Question

Let f(x) =3x, g(x)=x+1. Find the composite function. (g•f)(2)
PreCalculus

Answer 1

I really don't mate. sorry

Answer 2

I don't really know either, sorry.

Just kidding I do know how to help you.

Any ideas?

Answer 3

Hints:
\[\Large (g \circ f)(x) = g(f(x))\]
\[\Large (g \circ f)(2) = g(f(2))\]

Answer 4

Second of all, the composite of a function like
g o f
is g(f(x))

Answer 5

So you find the value of f(2), then you PLUG that value into g(value)

So f(2) = 3(2) = 6
g(6) = 6 + 1 <-- Solve this

And that's how you do composite functions

Answer 6

What about the same thing but (f•g)(2)?
Is it basically the same thing?

Answer 7

I'm pretty sure this question is multiplying functions...? Might want to clarify with a screenshot.

Answer 8

If you mean \[\Large (f \circ g)(2)\]
Then \[\Large (f \circ g)(2) = f(g(2))\]