Saturday, November 23, 2013

find v•w where v=3i+j w=i+4j

v•w=
%0D%0Av%5B1%5Dw%5B1%5D%2Bv%5B2%5Dw%5B2%5D=%283%29%281%29%2B%281%29%284%29=7%0D%0A
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