1.

If |{:(6i , -3i , 1) , (4 , 3i, -1) , (20 , 3 , i):}| = x +iy show that x = y = 0

Answer»

`x = 3 , y= 1`
`x = 0 , y =0`
`x = 1 , y = 3`
`x = 0 , y = 3`

ANSWER :B


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