If A- 1 -1- 2 -2 - Find 5I-8A

5I 8A=5[ 1 amp; 0; 0 amp; 1 ] 8[ 1 amp; 1; 2 amp; 2 ] =[ 5 amp; 0; 0 amp; 5 ] [ 8 amp; 8; 16 amp; 16 ...

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Transpose of a Matrix

If A=[ 1 -1...

Question

If $A = (\begin{matrix} 1 & - 1 2 & - 2 \end{matrix})$ Find $5 I - 8 A$

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Solution

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A = [\begin{matrix} 1 & - 1 2 & - 1 \end{matrix}]

B = [\begin{matrix} 2 & 1 1 & - 1 \end{matrix}]

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[\begin{matrix} 1 & - 1 2 & - 1 \end{matrix}], B = [\begin{matrix} a & 1 b & - 1 \end{matrix}]

(A + B)^{2} = A^{2} + B^{2}

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A = [\begin{matrix} 1 & - 1 2 & - 1 \end{matrix}], B = [\begin{matrix} a & 1 b & - 1 \end{matrix}]

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If A= $[\begin{matrix} 1 - 2 \end{matrix}], B = [\begin{matrix} 22 \end{matrix}] a n d C = [\begin{matrix} - 1 2 \end{matrix}]$ , find 2A+B-5C

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