Logarithmic differentiation

1. Jun 19, 2008

Ry122

Question:
Find derivative of f(x)=((x^2)(x^3))/((x^4)(x^2))
Attempt:
ln f(x)=(lnx^2)+(lnx^3)-(lnx^4)-(lnx^2)
Can someone tell me what I have done wrong so far?
Thanks

2. Jun 19, 2008

rootX

forgot to take log of both sides?

bring your powers down.. oo well, u prolly know this

3. Jun 19, 2008

cristo

Staff Emeritus
Why don't you just simplify and then differentiate?

4. Jun 19, 2008

Ry122

I did take the log of both sides. I'm doing it this way because i need to learn this method of differentiation.

5. Jun 19, 2008

rootX

oo yep, just realized that.
everything looks good