Yeah, so I can't figure out how to find the integral with respect to x of the following

cos(x) / (1 + x).

how would I do this?

thanks for any help

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- Feb 7th 2008, 08:53 PMsnoboarder2k6How to find this integral
Yeah, so I can't figure out how to find the integral with respect to x of the following

cos(x) / (1 + x).

how would I do this?

thanks for any help - Feb 7th 2008, 09:12 PMmr fantastic
- Feb 7th 2008, 09:14 PMsnoboarder2k6
yeah, I did try the integration calculator. I just have no idea what those symbols mean. What's the w/ the Si(...) Ci(...) etc?

That and I want to know how to do it w/o the help of a computer so I can handle it on a test if i need to.

thanks - Feb 7th 2008, 09:29 PMmr fantastic
What it means old son is that there's no answer in terms of a finite number of elementary functions.

If you haven't met the sine-integral Si(x) and cos-integral Ci(x) functions then I would be mighty surprised to see them required on your test ....... Where has the question come from?

Are you sure you not asked to get*definite*integrals, say form 0 to oo? - Feb 8th 2008, 06:42 AMsnoboarder2k6
this was part of a larger linear equation, so I'm gonna assume I screwed up somewhere else and that I shouldn't even have to do this.

Thanks for you're help though - Feb 8th 2008, 09:24 AMThePerfectHacker