More calculus help please?
This math is making me feel stupid
I've come back with two more questions:
Determine dy/dx of y=xe^(1/x^3) + ln(x/(x^(2)+1)) at (1,e)
and
Determine dy/dx when xsin2y=ycos2x.
As always, any help is appreciated. Thanks. @_@
December 19, 2013
4 Comments • Newest first
Thank you so much for the help c:
First one
xe^(x^-3)
Product rule
ln(x/(x^(2)+1))
Chain rule
Doing the ln becomes
(x^2 +1)/(x) -> x+ 1/x
Derive again
But how? Sorry for the trouble.
1. -2e
2. (-2ysin2x - sin2y)/(2xcos2y - cos2x)