Hi Everyone, First of all, just wanted to say that I just recently started working in sympy. I've enjoyed it so far and think that it is a wonderful project.
On to my issue. I'm currently in the process of writing a random variable class, and need to write a procedure that can invert cumulative distribution functions. Basically, it seems like the solve procedure chokes when there is a negative symbol in an exponential function. The procedure works fine if there is a non-negative symbol instead. For instance, solve((1-exp(-4*x))-y,x) fails, whereas something like solve((1-exp(4*x))-y,x) works correctly. The negative sign does not look like it's the problem, since solve works with negative integers and floating point numbers in the exponential. The exception raised is NotImplementedError, and may be related to the guess_solve_strategy procedure. Note that I haven't looked through the code for the solve procedure yet. Wanted to see if anyone else has run into this issue. -- Matt Robinson -- 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.
