C3091317 - = I T(By the definition of inverse = I So by...

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17. (Statement of the problem.) Proof. A T ( A - 1 ) T = ( A - 1 A ) T (By Algebraic Rule 4 for Transpose) = I T (By the definition of inverse) = I , ( A - 1 ) T A T = ( AA - 1 ) T (By Algebraic Rule 4 for Transpose)
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Unformatted text preview: = I T (By the definition of inverse) = I . So by the definition, A T is nonsingular and ( A T )-1 = ( A-1 ) T . / 1...
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