Question

Integrate e^x cos(x) dx.
PS I have tried integrating by parts and it doesn't work.

Answer 1

\[\int e^x\cos(x)dx\]
use integration by parts twice

Answer 2

How will that work? Can you please show me the first few steps?

Answer 3

this is a standard result that should be in any good intro calculus book.

Answer 4

http://en.wikipedia.org/wiki/Integration_by_parts

Answer 5

look at the examples given

Answer 6

I see, thanks