Performs element-wise addition. plus(a,b) is equivalent to a+b.
Scalar or array of any dimension.
Scalar or array of the same size as a. If both a and b are arrays, b must be of the same size as a.
a+b. c is a scalar or an array of any dimension. The output data type is not the greater data type of the two inputs. For example, if one input is double precision and the other input is single precision floating point number, the output is a single type.