Question

Suppose that the functions u and w are defined as follows:
u(x)=x-1
w(x)=2x^2-1
Find the following:
(w o u)(-5)=?
(u o w)(-5)=?

Answer 1

So first of all, what are the two composite function (w o u)(x) and (u o w)(x)

For example, suppose f(x) = x^2 and g(x) = 3x - 1. Then
(f o g)(x) = f(g(x)) = f(3x - 1) = (3x-1)^2