IGCSE Maths Edexcel B 4MB1

Representation of data by a matrix

Addition and multiplication of matrices

An understanding of ideas of how to perform row and column multiplication, of order not more than $3 × 3$, for these operations will be expected

Multiplication of a matrix by a scalar

Unit (identity) matrix and zero (null) matrix

Of order not more than $3 × 3$

Determinants and inverses of non-singular $2 × 2$ matrices

Knowledge of singular matrices is not required

Transformations of the plane associated with $2 × 2$ matrices

*Transformations include:

Reflections in $x=0$, $y=0$ and $y=\pm x$

Rotations about the origin

Enlargements with centre at the origin*

Combination of transformations

The matrix $\bold{AB}$ represents the transformation represented by $\bold{B}$ followed by the transformation represented by $\bold{A}$