Matrices 1 (AQA A-Level Further Maths): Flashcards

$n$ rows, $m$ columns

Rows (then columns)

Must have same order

Multiply each element by the scalar

Columns in first = rows in second

No, in general $AB \neq BA$

Swap rows and columns

$B^T A^T$ (order reverses)

All elements equal to zero

$B \times B$, NOT squaring each element