findiff {cmna} | R Documentation |
Finite differences formulas
findiff(f, x, h = x * sqrt(.Machine$double.eps))
symdiff(f, x, h = x * .Machine$double.eps^(1/3))
findiff2(f, x, h)
rdiff(f, x, n = 10, h = 1e-04)
f |
function to differentiate |
x |
the |
h |
the step-size for evaluation |
n |
the maximum number of convergence steps in |
The findiff
formula uses the finite differences formula to
find the derivative of f
at x
. The value of h
is the step size of the evaluation. The function findiff2
provides the second derivative.
the value of the derivative
findiff(sin, pi, 1e-3)
symdiff(sin, pi, 1e-3)