If A- 1 -5 7- 0 7 9- 11 8 9 - then trace of matrix A is-

The correct option is C 17 We know that, tr (A)=∑_i=1^na_ii ∴ If A =1 amp; #160; 5 amp; 7 #160;0 amp; 7 amp;9 ...

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Null Matrix

If A=[ 1 -5...

Question

If $A = ⎡ ⎢ ⎣ \begin{matrix} 1 & - 5 & 7 0 & 7 & 9 11 & 8 & 9 \end{matrix} ⎤ ⎥ ⎦$ , then trace of matrix A is.

17

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25

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3

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12

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