When refining an approximation, we can offer an option of implementing a Chord-type method instead of Newton's method for the refinement. This would involve not updating the Jacobian matrix, or updating less frequently for each refine. This would reduce evaluations and LU decompositions.
When refining an approximation, we can offer an option of implementing a Chord-type method instead of Newton's method for the refinement. This would involve not updating the Jacobian matrix, or updating less frequently for each refine. This would reduce evaluations and LU decompositions.