Hi there, J looks very interesting. I have no previous experience with array languages and, being curious, started to experiment. Now, I would like to solve a system of non-linear equations. I could only examples solving single equations like this one:
N=: 1 : '- u % u d. 1' NB. Adverb implementing Newton-Raphson iteration. (_2 + *:) N^:_ ]1 NB. Find root of “0 = _2+x^2”, starting guess of “1”. Is it also possible to solve a system of equation like the following one in a similar elegant manner? f1(x) = a*(1-x1) f2(x) = b*(x2-x1^2) Example from https://www.gnu.org/software/gsl/doc/html/multiroots.html#examples Thanks for any ideas! -Martin ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
