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Nonlinear Equations The Nonlinear Equations module (NLSYS) solves systems of nonlinear equations where there are as many equations as unknowns. The new version utilizes new GAUSS functions, significantly increasing accuracy and computational speed.The functions must be continuous
and differentiable. You may provide a function
for calculating the Jacobian, if desired. Otherwise NLSYS will compute the
Jacobian numerically. You can also select from two descent algorithms, the
Newton method or the secant update method, and from two step-length methods,
a quadratic/cubic method, or the hookstep method. Platform: Windows, LINUX, Solaris, and Mac.
Requirements: GAUSS/GAUSS Light version 3.2 or higher.
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