On Sat, Nov 8, 2008 at 3:39 PM, Jason Merrill <[EMAIL PROTECTED]> wrote:
>
> I was looking at 
> http://groups.google.com/group/sage-support/browse_thread/thread/c84c02aa5fca898,
> in which the poster complained of an integral Sage does incorrectly,
> so I thought I'd see if Sympy could do it.  In fact, Sympy fails the
> simpler case below
>
>>>> from sympy import Symbol, sin, integrate
>>>> x = Symbol('x')
>>>> integrate(1/sin(x)**2,x)
> 0
>
> A correct answer is -1/tan(x)

Indeed, thanks very much for the bug report. I made it:

http://code.google.com/p/sympy/issues/detail?id=1188

It's interestig, that both  integrate(1/sin(x),x) and
integrate(1/sin(x)**3,x) seem to work.


Ondrej

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