however the solution the manual was rather subtraction instead of addition ? the reason the book answer was subtraction, is because they moved the to the denominator and turned it into & used the quotient rule.
so you would have:
also
urgent response needed
find the derivative
i got this not really simplified and im not sure how to
see above in red! For the second one, change the square root into and then do your chain rule. Then when you are finished taking the derivative, you can change any of those left back into roots.
Not many people would notice that.
I bet the solution manual used the chain rule.
You're way too hard on yourself.
I like solving problems several ways, that way I can check my answers.
Last edited by matheagle; Mar 14th 2009 at 02:11 PM.