I have been working on a problem and end up needing to solve a system of nonlinear equations that are polynomials wrt to the variables of interest. There are six equations and six unknowns and only two of the variables are related non-linearly. This is the basic form:
[-c3 + 55.3719398861938], [-c2 - 3*c3 + 1524.09472216942], [-c1 - 3*c2 - 100*c3 - 111.682822870417*k_delta*k_phi + 16670.819288228] [-c0 - 3*c1 - 100*c2 - 8153.56338281556*k_delta*k_phi + 3891.45616272381*k_delta + 55610.0242428841] [-3*c0 - 100*c1 - 90978.6714602982*k_delta*k_phi + 276475.776481344] [-100*c0 - 38237.9055133813*k_delta + 84011.44228978] But more generally, I have symbolic coefficients. SymPy solve solves this correctly! Which is cool, but it took 4 hours to solve on my machine. I haven't tried to solve the above numerical form yet. I'm curious if there is something I should be doing with SymPy to help it solve this faster. If I change some of the symbols to specific rationals I've had it solve as quickly as 20 minutes. The full example is here: http://nbviewer.jupyter.org/gist/moorepants/0e85508f1b0753b01e4d9ced83e3519c/solve_inner_loop_gains.ipynb Jason moorepants.info +01 530-601-9791 -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to sympy+unsubscr...@googlegroups.com. To post to this group, send email to sympy@googlegroups.com. Visit this group at https://groups.google.com/group/sympy. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAP7f1AjkW8arp_HMu7eUNq9axwvTUMiJjr1%3Drf2MWSG_R7nhgg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
