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...Vector algebra revision notes avector is a one dimensional array of numbers for example the analysis three geometry we will consider only vectors dimension two or p x py z t canbewrittenwithinalineusingthetransposenotationasp themagnitudeofpiscomputed q y by thedirectionofpisdenedbytheangleswiththecartesianaxes where cos aunit convention unit in directions cartesian axes are labelled i j and k with often used specifying lower case bold italic letters these may be treated position which start at origin describe particular space alternatively they as direction simply have magnitude not associated any coordinate system aposition it instance starts from upper adirection same name particularly when denes its relevant addition there way to add that individual ordinates so scalar multiplication means each element multiplied e d reverses can combined dene line equation b dspecies through point choosing value identify on interactive computer graphics thescalar product ways multiplying together ...