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If a and B Are Invertible Matrices, Which of the Following Statement is Not Correct. - Mathematics

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प्रश्न

If A and B are invertible matrices, which of the following statement is not correct.

पर्याय

  • \[adj A = \left| A \right| A^{- 1}\]

  • \[\det \left( A^{- 1} \right) = \left( \det A \right)^{- 1}\]

  • \[\left( A + B \right)^{- 1} = A^{- 1} + B^{- 1}\]

  • \[\left( AB \right)^{- 1} = B^{- 1} A^{- 1}\]

MCQ
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उत्तर

\[\left( A + B \right)^{- 1} = A^{- 1} + B^{- 1}\]

We have, \[adj A = \left| A \right| A^{- 1}\], \[\det \left( A^{- 1} \right) = \left( \det A \right)^{- 1}\] and \[\left( AB \right)^{- 1} = B^{- 1} A^{- 1}\] all are the properites of inverse of a matrix.

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पाठ 7: Adjoint and Inverse of a Matrix - Exercise 7.4 [पृष्ठ ३८]

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आरडी शर्मा Mathematics [English] Class 12
पाठ 7 Adjoint and Inverse of a Matrix
Exercise 7.4 | Q 21 | पृष्ठ ३८

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