Question

If f(x) = 3x and g(x)=2x, what is (gf)(x)?

Answer 1

• See below

Explanation:

Given:

• f(x) = 3x and g(x)=2x

Find (g*f)(x):

• (g*f)(x) = g(x) * f(x) = 2x * 3x = 6x²

If you are looking for (g·f)(x), then it is:

• (g·f)(x) = g(f(x)) = g(3x) = 2(3x) = 6x

Answer 2

Answer: 6x

Explanation:

we shall go right to left in the function

g(3x)

2(3x)

6x