Could somebody share some tips on implementing multivariate integration and
partial differentiation in R?
For example, for a trivariate joint distribution (cumulative density function)
of F(x,y,z), how to differentiate with respect to x and get the bivariate
distribution (probability density function) of f(y,z). Or integrate f(x,y,z)
with respect to x to get bivariate distribution of (y,z).
Your sharing is appreciated.
Wei-han Liu
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