ZeroTest
2D/3D

• ZeroTest is an option that specifies a functional test for convergence in SolveMech and many other numerical functions that use Newton's method.
• ZeroTest->f assumes that convergence has been reached if the function f returns True when applied to each element of the result vector of Newton's method.

• ZeroTest must be a function that returns True or False when applied to a number.
• The default setting for most functions is ZeroTest->(Abs[#]<10^-9&).
• See also: DampingFactor.