[SciPy-user] help about a function to solve no linear equations

Nils Wagner nwagner@iam.uni-stuttgart...
Tue Apr 22 15:45:49 CDT 2008


On Tue, 22 Apr 2008 13:38:54 -0700
  "Jose Lopez" <lopmart@gmail.com> wrote:
> hi
> 
> somebody know, any function at scipy for solver system 
>no linear equations?
> 
> thanks
> atte JL

scipy.optimize.fsolve

fsolve(func, x0, args=(), fprime=None, full_output=0, 
col_deriv=0, xtol=1.49012e-08, maxfev=0, band=None, 
epsfcn=0.0, fact
or=100, diag=None, warning=True)
     Find the roots of a function.

     Description:

       Return the roots of the (non-linear) equations 
defined by
       func(x)=0 given a starting estimate.

     Inputs:

       func -- A Python function or method which takes at 
least one
               (possibly vector) argument.
       x0 -- The starting estimate for the roots of 
func(x)=0.
       args -- Any extra arguments to func are placed in 
this tuple.
       fprime -- A function or method to compute the 
Jacobian of func with
               derivatives across the rows. If this is 
None, the
               Jacobian will be estimated.
       full_output -- non-zero to return the optional 
outputs.
       col_deriv -- non-zero to specify that the Jacobian 
function
                    computes derivatives down the columns 
(faster, because
                    there is no transpose operation).
       warning -- True to print a warning message when the 
call is
                   unsuccessful; False to suppress the 
warning message.
     Outputs: (x, {infodict, ier, mesg})

       x -- the solution (or the result of the last 
iteration for an
            unsuccessful call.

  
HTH

         Nils


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