$\"\"$

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The matrices are $\"\"$ .

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The dimension of the two matrices is $\"\"$ .

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If X and Y are inverse then $\"\"$ .

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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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$\"\"$

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$\"\"$

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$\"\"$ .

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$\"\"$ .

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The solution is true.

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$\"\"$

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The inverse matrix of $\"\"$ .