Question

for f(x)=x+4 and g(x)=1/x^2 find (g o f)(4)

Answer 1

It's this right?:
\[\LARGE f(x)=x+4\]
\[\LARGE g(x)=\frac{1}{x^2}\]

Answer 2

Yes, sorry I did not put it in correctly.

Answer 3

(g o f)(4) = g(f(4))
Find f(4)
Then find g(f(4))

Answer 4

f(x) = x + 4
f(4) = ?

Answer 5

Ranga's way is easier, but just so you you could do it this way:
\[\LARGE g(f(x))=\frac{1}{(x+4)^2}\]

Answer 6

After you simplify that, just plug in 4

Answer 7

Alright thank you!