/usr/lib/R/site-library/numDeriv/INDEX is in r-cran-numderiv 2014.2-1-1.
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The actual contents of the file can be viewed below.
1 2 3 4 5 6 | 00.numDeriv.Intro Accurate Numerical Derivatives
genD Generate Bates and Watts D Matrix
grad Numerical Gradient of a Function
hessian Calculate Hessian Matrix
jacobian Gradient of a Vector Valued Function
numDeriv-package Accurate Numerical Derivatives
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