Hi

I need a bit of help here....not sure how to start with

lim x->0 (cos(^2)x - cosx)/x

if i take cosx out [cosx(cosx - 1)]/x

doesn't that give me cosx/x out the front which is undefined?....or am I getting all turned around?

Sorry about how messy this is....I'm still learning how to use latex

Thanks every one