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Topic: Integrate bug in v 9.0.0
Replies: 3   Last Post: Feb 4, 2013 10:23 PM

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Bob Hanlon

Posts: 906
Registered: 10/29/11
Re: Integrate bug in v 9.0.0
Posted: Feb 4, 2013 1:25 AM
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$Version

"9.0 for Mac OS X x86 (64-bit) (January 24, 2013)"

The use of Apart isn't necessary


Integrate[x^2/(x^2 - x0^2),
{x, x1, x2},
Assumptions -> x0 > x2 > x1 >= 0,
GenerateConditions -> False]

-x1 + x2 + x0 ArcTanh[(x0 (x1 - x2))/(x0^2 - x1 x2)]


Assuming[
x0 > x2 > x1 >= 0,
Integrate[
x^2/(x^2 - x0^2),
{x, x1, x2},
GenerateConditions -> False]]

-x1 + x2 + x0 ArcTanh[(x0 (x1 - x2))/(x0^2 - x1 x2)]


Bob Hanlon


On Sun, Feb 3, 2013 at 8:20 PM, DC <b.gatessucks@gmail.com> wrote:
> Not fixed in 9.0.1 but it works with :
>
> Integrate[Apart[x^2/(x^2 - x0^2)], {x, x1, x2},
> Assumptions -> x0 > x2 > x1 >= 0, GenerateConditions -> False]
>
> (* -x1 + x2 + x0 ArcTanh[(x0 (x1 - x2))/(x0^2 - x1 x2)] *)
>
>





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