Calculating the inverse DTFT of a signal There is a signal $y[n]$ with a differentiable DTFT $Y(e^{i\omega})$. How do I find the inverse DTFT of $i\frac{dY(e^{i\omega})}{dw}$ in terms of $y[n]$ (where of course $i =  \sqrt{-1}$)?
You can develop it relatively easily, anyways, here's a screenshot from wikipedia