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Integrate logs?

Posted 9 years ago

Hi all.

I am trying to integrate xlnx.dx, for x=2,4, but I get the output below. Why is the output just an expression of the integral? Why is the output not a numerical value? Thanks in advance.

Log

POSTED BY: D P
4 Replies

On my system I get -3 + 7 Log[4] as output. Quit Mathematica and try again.

POSTED BY: Gianluca Gorni

I have Mathematica 10.0.1.0 on Windows 8.1 and I have no problems with this expression.

enter image description here

There are several solutions:

1.Quit Mathematica and start again.

2.Enter

Clear["Global`*"]

3.Menu->Evaulation->Quit Kernel->Local

POSTED BY: Mariusz Iwaniuk
Posted 9 years ago

Thanks for the replies. I have tried all suggestions, and the output is still the same. :/

I have Mathematica 10.0.0 Student Edition, running in Windows 8.1 Professional.

POSTED BY: D P
Posted 9 years ago

Ah, I found the problem..."log" should have been "Log". :)

POSTED BY: D P
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