Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

This question is killing me. I Have a final coming up and need the answer to this.enter image description here

share|cite|improve this question

Hint: $$f(x) = A'(x)$$

At what points does $\quad f(x) = A'(x) = 0\quad$ ?

share|cite|improve this answer
Very nice hint +1 – Amzoti May 20 '13 at 1:02

Hint: They are the $x$-intecepts.

share|cite|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.