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Vectors formulae

The 2 results the vectors notes display, each with the conditions it needs to be true and a link to the lesson that states it. The formulae booklet prints none of them, so every one is yours to carry into the examination in your head.

Years 12-13 · 2 lessons with formulae.

A result the Edexcel formulae booklet prints is marked as such; one it does not print is marked to learn; and a result badged derived in the lesson is a working line the notes build in front of you rather than a standard result to memorise.

2 lessons

Vectors in two dimensions

\overrightarrow{AB} = \text{b} − \text{a}

NOT IN THE BOOKLET: LEARN ITConditionsa and b the position vectors of A and B, measured from the same origin.

Vectors in three dimensions

|x\text{i} + y\text{j} + z\text{k}| = \sqrt{x^{2} + y^{2} + z^{2}}

NOT IN THE BOOKLET: LEARN ITConditionsComponents taken along mutually perpendicular axes.

Every formula in the library is indexed by unit on the equation index, and the vectors notes are where these results are derived and used. The 2 the booklet does not print are on the list of every formula to memorise, alongside the rest of the course.

Also: Numerical methods formulae · Statistics formulae