Matrix row/column addition

[mateogianolio]

Proposal:

Adds a multiple of one row to another inside a matrix.

// (Matrix, Number, Number, Number) => (Matrix)
Matrix.rowAdd = function (matrix, i, j, scalar)

// (this, Number, Number, Number) => (this)
Matrix.prototype.rowAdd = function (i, j, scalar)

Example:

var m = new Matrix([[1, 2], [3, 4]]);
m.rowAdd(0, 1, 10);
// [[31, 42], [3, 4]]

Same for columns.

[christianbender]

@mateogianolio I will work on this. For example a method for the class Matrix

rowAdd(dest : number, source : number, scalar : number) : Matrix

• dest (destination) is the row for adding the other row that was multiplied with the scalar.
• source : is the row that would be multiplied with the scalar (for adding)

For you example:
dest := 0
source := 1

[mateogianolio]

Closed by #138.