Multiplies two matrices, if they are conformable. If one argument
is a vector, it will be coerced to either a row or a column matrix
to make the two arguments conformable. If both are vectors it will
return the inner product.
Usage
x %*% y
# S3 method for default
%*%(x, y)
Value
The matrix product. Uses 'drop' to get rid of dimensions which
have only one level.