$\"\"$

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The augumented matrix is $\"\"$

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Let $\"\"$

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The matrix is singular and has no inverse matrix.

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So,Its determinant is equal to zero.

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Find the determinant of matrix $\"\"$ .

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