Last updated April 10, 2022

Status: Tags: #cards/math232/unit3 Links: Matrix

Matrix Operations

Principles

Multiplication

Key ideas: ?

• Not commutative
• Cancellation law not valid
  • AB=AC doesn’t imply that B=C
• AB=0 doesn’t mean a or b is 0

For the matrixes A and B: Finding AB: ?

• Distribution of each row of first matrix into each column of second matrix, product becomes an element
• A columns must match B rows
  • Size of output is a rows x b column
• 
• 

Finding BA:

Examples

?

Backlinks

1

list from Matrix Operations AND !outgoing(Matrix Operations)

References:

Created:: 2022-01-25 20:11