Re: integrate with respect to x, trig identity present
Originally Posted by bobmarly12345
integrate with respect to x:
(1 + cos 2.pi.n.t)dt
Assuming that you wanted to integrate this with respect to t (since there are not any x terms)
$\displaystyle \displaystyle \begin{align*} \int{1 + \cos{\left(2\pi n t\right)}\,dt} &= t + \frac{1}{2\pi n}\sin{\left(2\pi n t\right)} + C \end{align*}$