$\"\"$

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If $\"\"$ and $\"\"$ is non singular does $\"\"$ .

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Find $\"\"$ :

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$\"\"$

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$\"\"$

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$\"\"$

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Find $\"\"$ :

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Inverse of a $\"\"$ matrix : $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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Find $\"\"$ :

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$\"\"$ .

\

$\"\"$

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Find $\"\"$ :

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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There fore $\"\"$ .

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$\"\"$

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$\"\"$ .