Disclaimer: these videos were produced in 2011, but we have had positive feedback in relation to them in 2016 so we hope you find them useful! The following links will take you videos of individual ...
If \(\overrightarrow {PQ} = \left( {\begin{array}{*{20}{c}} a\\ b\\ c \end{array}} \right)\) then the magnitude of \(\overrightarrow {PQ}\) is written as \(\left ...
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