if im having to use the definition of the derivative to show if f(x)=sin2x then f'(x)=2cos2x how would i do this.i can do it for normal non trig functions?thanks sum difference formula?
if im having to use the definition of the derivative to show if f(x)=sin2x then f'(x)=2cos2x how would i do this.i can do it for normal non trig functions?thanks
You'll need to use the comount angle forum on
and you'll need to use the following limits and
Bobak
Last edited by bobak; June 3rd 2008 at 03:28 AM.
Reason: fixed an little error