EMLA Q.64

0. If A be an invertible matrix and inverse of 7A is 

If A be an invertible matrix and inverse of 7A is

then matrix A is

  • Option : A
  • Explanation : Inverse of 7A= 

    Linear Algebra

    Linear Algebra

    = 7 - 8 = -1

    Therefore matrices of co factor

    Linear Algebra

    and its transpose,

      Linear Algebra

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