I face a problem with root finding. I'm solving a system of equations using FindRoot function. I received the following message "Singular Jacobian".. Is there a way to avoid this? I tried perturbing the initials and it didn't work.
Use FindMinimum by giving it an objective function of 0 and your equations as constraints. You could also try NSolve.
I checked FindMinimum and it is used to get Minimm of function, how it is used to solve system?
Linear Equations can be easily solved by FindMinimum
equations are linear system in unknowns u[i,j]
Would be easier to help if you post the equations.
Thank You. The problem that, I found it for a single function "blackbox" but I need it to solve system of equations. Any help?
You could try a FiniteDifference Jacobian or specify the Jacobian yourself, as described in the Options section of the FindRoot documentation.
