matrices

Summary

by matrix, rows and columns

Entries

Rules

Concept

Zero matrix -> all entries are 0
Square matrix -> no. of rows = no. of cols
Other special matrices

Scalar multiplication

Matrix addition/subtraction

Application

3 by 4 zero matrix, 3 rows and 4 cols

Zero square matrix of order 3, 3 rows and 3 cols

Extra

Octave

# Zero matrix(m × n)
zeros(m, n)

# Identity matrix(n × n)
eye(n)

# Matrix addition and scalar multiplication
A + c * B