This is the only section so far that i dont understand, i don't know how to(adsbygoogle = window.adsbygoogle || []).push({});

do some types of questions like the ones im going to ask, can anyone please help me with these.

1. Let g(x)= x-3. Find a function of f so that f(g(x)) = x^2

2. Let f(x) = x^2. Find a function g so that f(g(x)) = x^2 + 8x + 16

3. Let f(x) = x + 4 and g(x) = (x-2)^2. Find a function u so that

f(g(u(x))) = 4x^2 - 8x + 8

4. Let y = f(x^2 + 3x - 5). Find y' when x = 1, given that f'(-1) = 2

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# Homework Help: Composite functions

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