nderive | R Documentation |
Linear approximation to function partial derivatives of arbitrary order and dimension.
nderive(fun, point = c(0), order = c(1), difference = 1e-04, area = c(0, 1, -1))
fun |
function. Arguments can be in sequence or single vector. |
point |
numeric vector. Where to evaluate the derivative. |
order |
numeric vector of orders for each variable. |
difference |
numeric. A change in the variable that (by limit) is to approach zero. |
area |
numeric. One of {0,1,-1} representing two-sided, right-sided or left-sided limit, respectively. |
Numeric.
Tomas Bacigal
nintegrate
##density of a bivariate Gumbel copula evaluated in point c(0.5,0.6)
nderive(fun = function(x) pCopula(x,genGumbel(),gpar=3.5), point = c(0.5,0.6),
order = c(1,1))
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