# Math Help - Differentiation

1. ## Differentiation

Hi I am just looking for some help on a question for college. I have attached the question 4 doc, I have parts 1, 2 & 3 done I think that I have part 4 done right (I have attached my attempt so far) but I don't what to do for parts 5 & 6 if anyone could help that would be great. Cheers

2. ## Re: Differentiation

In part 4, you've found that a minimum occurs at $x_0=-2.89$ and a maximum occurs at $x_1=0.23$ (I didn't check if this was correct). This is where the min/max point is, and should be the only answer for part 4. The min/max value is the second number you wrote down in each case: $f(x_0)=-9.34$ is a minimum value and $f(x_1)=9.38$ is your maximum value. These second numbers are the answers to part 5.

Putting the two into pairs $(-2.89,-9.34);(0.23,9.38)$ as you did in part 4 actually gives you the answer for part 6. So in essence, you implicitly answered parts 5 and 6 in your answer to part 4.