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given u= 2i+j-k and v=i-7j+2k find (u*v)v

0 votes
asked Oct 31 in CALCULUS by anonymous
reshown Oct 31 by bradely

1 Answer

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u= 2i+j-k

v=i-7j+2k

u*v=(2i+j-k)*(i-7j+2k)

       =2*1+(1*-7)+(-1*2)

       =2-7-2

        =-7

(u*v)v=-7(i-7j+2k)=-7i+49j-14k

answered Oct 31 by johnkelly Apprentice

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