Solving Nonlinear Systems
-------------------------
For linear systems, see :meth:`Matrix.solv`.
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.. function:: prmat
Prints the form of the matrix defined by :ref:`eqn ` statements. Each nonzero
element is printed as an "*".
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.. function:: solve
Does one iteration of the non-linear system defined by :ref:`eqn ` statements.
Returns the linear norm of the difference between left and right hand sides
plus the change in the dependent variables.
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.. function:: eqinit
Throws away previous dependent variable and equation specifications
from :ref:`eqn ` statements.