# Math Help - integrate with respect to x, trig identity present

1. ## integrate with respect to x, trig identity present

integrate with respect to x:

(1 + cos 2.pi.n.t)dt

2. ## 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 \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*}