# NonlinearProblem¶

class dolfin.cpp.la.NonlinearProblem

Bases: object

This is a base class for nonlinear problems which can return the nonlinear function F(u) and its Jacobian J = dF(u)/du.

Constructor

F()

Compute F at current point x

J()

Compute J = F’ at current point x

form()

Function called by Newton solver before requesting F or J. This can be used to compute F and J together

thisown

The membership flag