$\"\"$

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The matrices are $\"\"$ and $\"\"$ .

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Derive the formula for inverse of $\"\"$ matrix.

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$\"\"$

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$\"\"$ and $\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$ and $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Solve the equation $\"\"$ and equation $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Solve the equation $\"\"$ and equation $\"\"$ .

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$\"\"$

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$\"\"$ .

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$\"\"$

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$\"\"$

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Substitute $\"\"$ in $\"\"$ .

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$\"\"$

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$\"\"$

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Inverse of $\"\"$ matrix.

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$\"\"$

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$\"\"$

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Inverse of $\"\"$ matrix $\"\"$ .