Modelling involving Numerical Methods (AQA A-Level Mathematics): Flashcards

Magnitude (size) and direction

$|\mathbf{a}| = \sqrt{a_1^2 + a_2^2}$

Component-wise: add corresponding components

Does not change direction

Vector from origin to a point

Vector between any two points

$B - A$

Vector with magnitude of 1 unit

Divide $\mathbf{a}$ by its magnitude

Changes the magnitude