Question

Find f(f)(3)

if

f(x)=x^2+x

a.30
b.6
c. 33
d. -6

Answer 1

b

Explanation:

Answer 2

For this case we have a function of the form
`y = f (x)`, where
`f (x) = x ^ 2 + x`

We must find the value of the function when x = 3, that is, f (3).

So:

`f (3) = (3) ^ 2 + 3\\f (3) = 9 + 3\\f (3) = 12`

The value of the function when x = 3,is given by
`y = 12`

Answer:

`f (3) = 12`