Posted by Anonymous on .
What is the derivative of (x^2+4x+5)/(x^32x)?

Math 
Reiny,
quotient rule !
dy/dx = ( (x^3  2x)(2x + 4)  (x^2 + 4x + 5)(3x^2  2) )/(x^3  2x)^2
= etc 
Math 
Anonymous,
I know you use quotient rule. Is the answer (x^48x^317x^2+8x+10)/(x^32x)^2
Thanks Reiny! 
Math 
Reiny,
If you are taking Calculus, surely you should have no difficulty expanding and simplifying
(x^3  2x)(2x + 4)  (x^2 + 4x + 5)(3x^2  2)
I will leave that up to you to check if your answer is correct.
(hint: the answer is yes)