Question

If f(x) = x² + 1, then f(f(3)) = ?

Answer 1

f(f(3))=101

Explanation:

To solve this problem, first solve for f(3):

`f(3)=(3)^2+1\\f(3)=9+1\\f(3)=10`

Then, insert f(3) into f(2) by substituting f(3) in place of x:

`f(f(3))=f(10)\\f(10)=(10)^2+1\\f(10)=101`