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December 23rd, 2012, 08:44 AM   #1
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Improper integral

So i calculate this improper integral, given as an attachment. The final solution should be ln(2).

But the last step says: - ln(R) + ln(2) + ln(R-1) - ln(1)
If you replace R by ? you should get: - ln(?) + ln(2) + ln(? -1) - 0)

So i do not understand why - ln(?) and ln(? - 1) can be set equal to 0 so the final solution is ln(2)?
I thought ln(?) = ? ?
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File Type: png improper.png (14.0 KB, 75 views)
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December 23rd, 2012, 08:51 AM   #2
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Re: Improper integral



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