If vec(a) = hat (i) +hat (j) , vec (b) ...

If `vec(a) = hat (i) +hat (j) , vec (b) = hat(i) - hat(j) ` and `vec(c ) = 5 hat (i) + 2 hat (j) + 3 hat(k) ` , find the value of `[ vec(b)vec (c ) vec(a)] `

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`-6`

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