Here's the question you clicked on:
LotusWings
I feel like I skipped a step. Example from Calculus AB Notes on Extrema Find the values of the derivative (if it exists) at each indicated extremum. f(x) = -3x(x+1)^(1/2)
|dw:1352963315334:dw| I'll write out my work .
|dw:1352963374401:dw| |dw:1352963485491:dw| I want to know how: |dw:1352963537286:dw|
http://www.wolframalpha.com/input/?i=diferentiate+-3x%28x%2B1%29%5E%281%2F2%29
check out that site and log in and it will show you step by step. have a good night.
then set the derivitive to = zero and solve for x. take that value and plug it into the original function and it will give you an extreme min or max, sorry but i'm too tired to do this tonight, sorry. good luck and good night.