Differentiation application

Question

f(x)=x^4-4x^3+4x^2+1

 

what is the maximum and minimum values of f(x) on the interval [-1,5]

 

 

i got x=1 local min. But I don't think that's correct, please help. 

Answer 1

Hi Nhu,

 

Check previous posting.  Two of us have answered.  

 

You DO get a local min at (0,1) and (2,1).  You get a local MAX at x=1.

 

Please see our answers to previous post.