Question

Help with functions?

f(x)=square root of x-2
g(x)=x^2

find (f*g)(x).

would it just be square root of x-2 * x^2? How would I go about multiplying?

Answer 1

thats right !

Answer 2

(f*g)(x) = f(x) * g(x)
= (x-2)*x^2

Answer 3

first multiply x wid x^2,
then multiply -2 wid x^2

Answer 4

how would you multiply the square root of (x-2) * x^2 in the function?

Answer 5

oh, i see

Answer 6

oh u have square root, wait a sec

Answer 7

yes, so it;s the square root of x-2

Answer 8

(f*g)(x) = f(x) * g(x)
= \(\sqrt{x-2}*x^2\)

Answer 9

= \(x^2\sqrt{x-2}\)

Answer 10

leave it like that, we cannot simplify it any further.

Answer 11

great, thanks for your help!