DOTTIMES DOTTIMES Element-wise Multiplication Operator

Usage

Multiplies two numerical arrays (elementwise).  There are two forms
for its use, both with the same general syntax:

  y = a .* b

where a and b are n-dimensional arrays of numerical type.  In the
first case, the two arguments are the same size, in which case, the 
output y is the same size as the inputs, and is the element-wise
product of a and b.  In the second case, either a or b is a scalar, 
in which case y is the same size as the larger argument,
and is the product of the scalar with each element of the other argument.

The type of y depends on the types of a and b using type 
promotion rules. All of the types are preserved under multiplication except
 for integer types, which are promoted to int32 prior to 
multiplication (same as C).
