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If A=[[1, 2],[ 4, 2]], then find the val...

If `A=[[1, 2],[ 4, 2]],` then find the value of `k` if `|2A|=k\ |A|`

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`A = [[1,2],[4,2]]`
`2A = [[2,4],[8,4]]`

`|A| = 2-8 = -6`
`|2A| = 8-32 = -24`
We are given,
`|2A| = k|A|`
`:. -24 = k**(-6)`
`=> k = 4`
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