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patricmutwiri / symja

Automatically exported from code.google.com/p/symja
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Integrate[] #26

Open GoogleCodeExporter opened 9 years ago

GoogleCodeExporter commented 9 years ago 
What steps will reproduce the problem?
I call the function: Integrate[x^2/(x^2+1),x]

What is the expected output? What do you see instead?
The expected output is x - ArcTan[x]. But the result is 
-x*Log[3*x]+x*Log[(-1)*x]+x.

What version of the product are you using? On what operating system?

Please provide any additional information below.
Is it bug?

Original issue reported on code.google.com by huynhlam...@gmail.com on 5 Oct 2010 at 9:55

GoogleCodeExporter commented 9 years ago 
I changed the implementation for integration of the partial fraction 
decomposition:
http://code.google.com/p/symja/source/detail?r=568

Please check again with new implementation.

Original comment by axelclk@gmail.com on 10 Oct 2010 at 10:27

GoogleCodeExporter commented 9 years ago 
The function works well.

Original comment by huynhlam...@gmail.com on 13 Oct 2010 at 5:38

GoogleCodeExporter commented 9 years ago 
You seem to lack the implementation for the definite integral.

Original comment by huynhlam...@gmail.com on 13 Oct 2010 at 9:16