If A - - 1 3- 9 -6 - then verify AI - IA - A- where I is the unit matrix of order 2-

Now, AI = ([ 1 amp; 3; 9 amp; 6 ]) ([ 1 amp; 0; 0 amp; 1 ]) = ([ 1 + 0 amp; 0 + 3; 9 + 0 amp; 0 6 ]) = ([ 1 amp; ...

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Symmetric Matrix

If A = [ 1 ...

Question

If $A = (\begin{matrix} 1 & 3 9 & - 6 \end{matrix})$ , then verify $A I = I A = A$ , where I is the unit matrix of order 2.

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