## anonymous 5 years ago Hi, The integral of Sin x / Cos x ?.. Is it .. 1\2 ln cosx? .. or is it just 1\2 cosx

1. anonymous

you can take the following : u = cos x du = -sinx dx and you'll end up with this form: $\int\limits_{}^{}1/u du = \ln \left| u \right| + c = \ln \left| \cos x \right| + c$ did you get this? :)

2. anonymous

Ahh.. Ln (cosx) .. what the did i get the 1\2 from... hehe.. Thank u sstarica.

3. anonymous

sorry it's:$= - \ln |cosx| + c$ I forgot about the (-) my bad ^^"

4. anonymous

lol, no problem ^_^