I have a system of 80 nonlinear equations with 64 variables to solve in Mathematica but it takes a lot of time (about two hours) and then it return "no more memory available" knowing that I have 8GB Ram on Windows 8 64 bits. The system is
First I used
Solve[sys,var] which did not work and also
NSolve did not work (as described above).
How can I make it work ? or at least find the number of unknowns that equal zero (that what I'm interested in).