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the great jar · 2006-07-30 21:52:17

I'm a beginning physics student and a certain problem require me to integrate $\int{\frac{x+1}{x^{2} + 1}}dx$ . Should I factor?

Last edited by the great jar (2006-07-30 21:55:39)

Chris · 2006-08-03 22:19:41

Tough integral. I normal look in my handy CRC book. If the integral isn't there, then I normally never need. Unfortunately I can't find that particular integral in my handy book.

I've moved this to the math forum. You may get a better response there.

BenTheMan · 2006-08-04 20:56:06

First of all, if it's not in the CRC or Schaum's, generally you should check your math and make sure the integral is correct.

Does your integral have any limits?

Anytime you see an integral that involves $\frac{1}{x^2+1}$ , you'll get ArcTan functions.

I don't want to get into the habit of doing people's homework, but the integral is:

$ArcTan(x) + \frac{1}{2}\log(1+x^2)$

Chris · 2006-08-04 21:05:57

I can't imagine a problem in an introductory physics class that would have you solving that integral.

Could you give us a little more information about the specific physics problem?

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#1 2006-07-30 21:52:17

Calculus help

#2 2006-08-03 22:19:41

Re: Calculus help

#3 2006-08-04 20:56:06

Re: Calculus help

#4 2006-08-04 21:05:57

Re: Calculus help

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