If A 2i-2j+4k and B= -2i+j+k, then A.B is equal to

1.	If A 2i-2j+4k and B= -2i+j+k, then A.B is equal to
Answer» Answer: -2 Explanation: In dot product ii=1 iJ=0 [same for each of i,j,K LIKE jj=1, jk=0. etc] USING that rule, A.B=(2(-2)) + ((-2)1) + (4*1) =-2

Answer»

Answer:

-2

Explanation:

In dot product i*i=1 i*J=0 [same for each of i,j,K LIKE j*j=1, j*k=0. etc]

USING that rule,

A.B=(2*(-2)) + ((-2)*1) + (4*1)

=-2

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If A 2i-2j+4k and B= -2i+j+k, then A.B is equal to

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