1. anonymous

2. anonymous

$\left(f(f)\right)'=f'(f(x))\times f'(x)$ via the chain rule

3. anonymous

your need three numbers first $$f(1)$$ what is that?

4. anonymous

3

5. anonymous

ok so we are at $f'(f(1))\times f'(1)=f'(3)\times f'(1)$

6. anonymous

all you need to do now is find $$f'(3)$$ and $$f'(1)$$ from the table and multiply

7. anonymous

14

8. anonymous

that is what i get too

9. anonymous

10. anonymous

i think so, yes

11. anonymous

thank you

12. anonymous

yw