I need to find

which I get to be

But I'm not sure how to use the limit at infinity for this. I'm also pretty sure I'm not meant to be getting zero at the answer but something depending on a.

Any help would be greatly appreciated!

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- May 9th 2009, 01:16 PMjamesIntegrating hyperbolic function to infinity
I need to find

which I get to be

But I'm not sure how to use the limit at infinity for this. I'm also pretty sure I'm not meant to be getting zero at the answer but something depending on a.

Any help would be greatly appreciated! - May 9th 2009, 01:20 PMBanned for attempted hacking
- May 9th 2009, 01:46 PMjames
Thanks for the quick reply, think I've got somethingwhich looks alright. What do you think?

over b and zero gives

then as b -> infinity the negative exponential vanishes so

- May 9th 2009, 01:50 PMBanned for attempted hacking
- May 9th 2009, 01:55 PMjames
Well as long as it's right I don't mind people laughing at my work...

Thanks a lot :) - May 9th 2009, 02:04 PMBanned for attempted hacking
I said funny because it becomes b -b = 0 which is equilalent to

infinity - infinity which is supposed to be undefined.