# numDeriv v2016.8-1.1

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## Accurate Numerical Derivatives

Methods for calculating (usually) accurate numerical first and second order derivatives. Accurate calculations are done using 'Richardson''s' extrapolation or, when applicable, a complex step derivative is available. A simple difference method is also provided. Simple difference is (usually) less accurate but is much quicker than 'Richardson''s' extrapolation and provides a useful cross-check. Methods are provided for real scalar and vector valued functions.

## Functions in numDeriv

 Name Description grad Numerical Gradient of a Function numDeriv-package Accurate Numerical Derivatives jacobian Gradient of a Vector Valued Function 00.numDeriv.Intro Accurate Numerical Derivatives hessian Calculate Hessian Matrix genD Generate Bates and Watts D Matrix No Results!