2011-02-09, 06:52 AM
StringStrider Wrote:It's been a couple (4) years since I've taken calc, but couldn't you take ln(e^-x^2) = -x^2?
Or is that the derivative?
I think you're thinking of how you derivate 2^x (or some other constant instead of 2), you take exp(ln(2^x)) because exp(ln( f(x))) = f(x). Normally, you can't just take natural logs without an taking an exponential too because then you have a different function

