What is the Correct Indefinite Integral for cos(5x) + cos(4x) / (1-xcos(3x))?

[deydas]

Hi!

I am stuck with this integration problem:

\int{\frac{cos 5x+cos 4x}{1-xcos3x}}

Thanks in advance.

 

[Tide]

Are you sure that's the right integrand?

 

[deydas]

yes that's the sum alright.

 

[arildno]

Then you might as well resign.

 

[deydas]

i guess there some printing error and that's not the sum. sorry for disturbing you guys.

 

[arildno]

It should be possible if you have only cos(3x) in the denominator, and not xcos(3x)

 

[deydas]

actually after doing a back calculation, i believe it should be 2cos(3x). darn mistake, really gave me a headache.

anyways thanks for all your help.