Hi all, I need help integrating: intg ((e^t)*cos(n*t))dt I have tried integrating by parts but it seemed like it just got more complicated. I know there is a theroem but i am not allowed to use it. Thanks in advance, ArTiCk
Follow Math Help Forum on Facebook and Google+
You actually integrate by parts twice and end up with a multiple of intg ((e^t)*cos(n*t))dt on both sides. Combine these ans solve In both cases let u = e^t to get started. Let me know if it works out
Originally Posted by ArTiCK Hi all, I need help integrating: intg ((e^t)*cos(n*t))dt I have tried integrating by parts but it seemed like it just got more complicated. I know there is a theroem but i am not allowed to use it. Thanks in advance, ArTiCk CB
Heckuva lot easier than my approach
View Tag Cloud