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Munehiro Nishida edited this page Oct 23, 2015 · 8 revisions

Solve characteristic equation

Use modified Muller's methods.

A modification of Muller's method by F. Costabile, M.I. Gualtieri, R. Luceri
Superlinear bracketing method for solving nonlinear equations by A. Suhadolnik.

These method seems to be applicable only for real roots.