[sympy] Re: integrate(1/sin(x)**2,x) returns 0

2008-11-08 Thread Ondrej Certik
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

[sympy] integrate(1/sin(x)**2,x) returns 0

2008-11-08 Thread Jason Merrill
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, integ

[sympy] permutations

2008-11-08 Thread Alan Bromborsky
Does anyone know a good (fast) way of determining the number of permutations needed to order a short list of integers say 10 or less and that would also return the ordered list? --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Go

[sympy] Re: Sympy design question about encapsulation

2008-11-08 Thread Ondrej Certik
On Tue, Nov 4, 2008 at 3:27 AM, Robert Kern <[EMAIL PROTECTED]> wrote: > > On Mon, Nov 3, 2008 at 20:09, Brian Granger <[EMAIL PROTECTED]> wrote: >> >> Ondrej, >> >> OK, gives me a bit more context about the history of all of this. >> But, I am definitely in favor of the localizing logic into clas

[sympy] Re: permutations

2008-11-08 Thread Ondrej Certik
On Sat, Nov 8, 2008 at 11:58 PM, Alan Bromborsky <[EMAIL PROTECTED]> wrote: > > Does anyone know a good (fast) way of determining the number of > permutations needed to order a short list of integers say 10 or less and > that would also return the ordered list? Well, for 10 or less items, I gues