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If A=[(1,a),(0, 1)] , then A^n (where ...

If `A=[(1,a),(0, 1)]` , then `A^n` (where `n in N)` equals `[(1,n a),(0, 1)]` (b) `[(1,n^2a),(0, 1)]` (c) `[(1,n a),(0 ,0)]` (d) `[(n,n a),(0,n)]`

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