Hi! I want to use complex numbers in the odeint package. Let me make it more precise. I have an eigenvalue inside the problem that I find by other means. (Related to acoustics). Now that can be complex. Is it possible in the current scipy ? In my case it was a Linear ODE, and hence I split into separate ones for real and imaginary ones and soved it. The other question is about Boundary value problem solvers. i.e can odeint or anything else solve Boundary value problems instead of initial value problems, or do I have to recourse to an iterative procedure myself instead of the solver doing it? (AFAIK matlab solves it in a similar way, assuming a derivative value at 0, and then iterating over it to meet the boundary value at the other end) Bye! -- Ganesh V Undergraduate student, Department of Aerospace Engineering, IIT Madras, India. My homepage --> http://www.ae.iitm.ac.in/~ae03b007