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Is there any equivalent command other than NSolve

Posted 10 years ago

Hello,

I am facing problem in solving a system of nonlinear equations , and using NSolve , it is working well but when i go for a system of 10 equations with 10 variables, i face problems , so i need some other equivalent command to solve system of equations.

Thanks

POSTED BY: Kashif Nazar
2 Replies

Michael Trott in "The Mathematica Guide to Numerics", says "For polynomials over rationals in one variable, all roots will be found by NSolve. For polynomials in several variables, this is the case too, but it may take a considerable amount of time".

POSTED BY: Frank Kampas

What were the problems, other than time and memory?

If you can make all the parameters undefined symbols, integers, or ratios of integers, try Solve or Reduce.

If the parameters in the equations don't quite allow a solution, maybe you could turn the equations into error expressions

(lhs-rhs)^2

add them up, and use NMinimize or FindMinimum.

A notebook showing your inputs and any warning or error messages you get would help the rest of us help.

POSTED BY: Bruce Miller
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