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If A=[a(i j)] is a scalar matrix of o...

If `A=[a_(i j)]` is a scalar matrix of order `nxxn` such that `a_(i i)=k` for all `i` , then trace of `A` is equal to `n k` (b) `n+k` (c) `n/k` (d) none of these

A

`k^(n)`

B

`n/k`

C

nk

D

None of these

Text Solution

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The correct Answer is:
C
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