For example: Integral(f(x), (x, 0, y), (y, 0, 1) ) is the same thing as Integral(f(x), (y, x, 1), (x, 0, 1) ) which integrates into Integral((1-x)*f(x), (x, 0, 1))
Currently: In [ ]: integrate(f(x), (x, 0, y), (y, 0, 1)) Out[ ]: Integral(f(x), (x, 0, y), (y, 0, 1)) In [ ]: integrate(f(x), (y, x, 1), (x, 0, 1)) Out[ ]: Integral((1 - x)*f(x), (x, 0, 1)) So, should we add code to check for this and switches variables by altering the limits to make it the same argument? There are some issues with this approach though. For something like Integral(f(x), (x,y, y+1), (y, 0, 2)) to be switched around it takes Integral(f(x), (y, 0, x), (x, 0, 1)) + Integral(f(x), (y, x-1, x), (x, 1, 2)) + Integral(f(x), (y, x-1, 2), (x, 2, 3)) because the equations defining the limits of integration change depending on the value of x. I was just wondering if this is something to consider. Would it even be very useful? Am I doing this correctly? Also, still a little new here so any pointers on how to do things and/ or advice on what I'm doing wrong would be very much appreciated. -- You received this message because you are subscribed to the Google Groups "sympy" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/sympy?hl=en.
