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

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Find the value of $\"\"$ .

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Find the product of $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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Find the value of $\"\"$ .

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Identity matrix $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$ .

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Find the value of $\"\"$ .

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

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$\"\"$

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$\"\"$

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$\"\"$ .

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Therefore, $\"\"$ .

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$\"\"$ .