1.

Consider oversetrarra=overset^^i+2overset^^j-3overset^^k,"" oversetrarrb=3overset^^i-overset^^j+2overset^^k "and " oversetrarrc=11 overset^^i+overset^^j:Find oversetrarra+oversetrarrb"and"oversetrarra.oversetrarrb

Answer»

SOLUTION :`veca+vecb=4overset^^i+overset^^j-overset^^k`
`veca.vecb=1xx3+2xx(-1)+(-3)xx2`


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