1/2 times the integral of 1/x is 1/2 lnx

however when i integrate the same problem as 1/2x and set u to 2x, I get

1/2 ln2x

Why are the answers not the same?

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- March 28th 2010, 09:24 AMSimon777Flaw in Integration?
1/2 times the integral of 1/x is 1/2 lnx

however when i integrate the same problem as 1/2x and set u to 2x, I get

1/2 ln2x

Why are the answers not the same? - March 28th 2010, 09:28 AMskeeter
- March 28th 2010, 09:32 AMSimon777
- March 28th 2010, 09:33 AMTheEmptySet
- March 28th 2010, 11:21 AMSimon777