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If vec a=3 hat i-2 hat j+ka n d vec b=2...

If ` vec a=3 hat i-2 hat j+ka n d vec b=2 hat i-4 hat j-3k` , find `| vec a-2 vec b|dot`

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If ` vec a=3 hat i-2 hat j+ka n d vec b=2 hat i-4 hat j-3k`
so,
`a1=3 ,a2=-2` and `a3=1`
`b1=2,b2=-4` and `b3=-3`
So,
` ∣∣⃗a−2⃗b∣∣.`
`=>sqrt((3-4)^2+(-2+4)^2+((1+3)^2))`
...
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