mul (alias: "x*y")

Compute the inverse of x.

Usage

mul(x, y)

Result

If both arguments x and y are vectors, the tensor (or dyadic) product of the vectors is computed and the result r is a matrix with nrow(x) rows and nrow(y) columns.

ri,j = xi * yj

For all other combinations of data types, the operator * is applied to x and y and the product x*y is returned. If the multiplication is not possible (e.g. invalid combination of data types), the function mul failes.

See also

trn, inv, ctrn, cmulv

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