look here for rules
http://www.mathwords.com/l/logarithm_rules.htm

then use the deriv of ln rules


can you understand this crap^^^^^?

strategy is get it looking like y=ln(U(x)) where U(x) is just some algebra expression that you know how to deal with


look here for examples
http://www.themathpage.com/aCalc/exp...htm#derivative