matrixMultiply

1.92

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Description

Description:

Resulting matrix of matrix multiplication.
First matrix must be of size N✕K, while the second must be of size K✕M.
If the shapes do not match, [] will be it returned.

Multiplayer:

-

Groups:

Uncategorised

Syntax

Syntax:

matrix1 matrixMultiply matrix2

Parameters:

matrix1: Array

matrix2: Array

Return Value:

Array

Examples

Example 1:

[[2],[2]] matrixMultiply [ [3] ]//Returns [[6],[6]]

Example 2:

[[-1,0,0], [0,-1,0], [0,0,-1]] matrixMultiply [[1,2,3], [3,1,2], [2,3,1]] //Returns [[-1,-2,-3], [-3,-1,-2], [-2,-3,-1]]

Additional Information

See also:

See also needed

Notes

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Posted on 30 Jun, 2019

oOKexOo

Note that this command won't transform a 1D array automatically into a column vector [[-1,0,0],[0,-1,0],[0,0,-1]] matrixMultiply [1,2,3] // wrong, syntax error [[-1,0,0],[0,-1,0],[0,0,-1]] matrixMultiply [[1,2,3]] // wrong, will return [] [[-1,0,0],[0,-1,0],[0,0,-1]] matrixMultiply [[1], [2], [3]] // correct, will return [[-1], [-2], [-3]]