How do I find inverse fourier transform of 1/(1+8e^3jw)?? Now, it would have been easier to find inverse of 1/(1+1/8e^jw), because that would be just (1/8)^n u[n] i think i basically need a way to write 1/(1+8e^3jw) in a form described below: A/(1+ae^(jw)) + B/(1+be^(jw) +C/(1+ce^(jw) where a, b, c are less than 1. How do I do that? partial fraction can be killing, because the process will be too long. Any other smarter methods?