Maths-
General
Easy

Question

Which one of the following statements is true

  1. Non- singular square matrix does not have a unique inverse    
  2. Determinant of a non-singular matrix is zero    
  3. If A to the power of ' end exponent equals A comma=A,'/> then A is a square matrix    
  4. If vertical line A vertical line not equal to 0, then vertical line A. a d j rightwards arrow over short leftwards arrow A vertical line equals vertical line A vertical line to the power of left parenthesis n minus 1 right parenthesis end exponent, where A equals left square bracket a subscript i j end subscript right square bracket subscript n cross times n end subscript    

The correct answer is: If A to the power of ´ end exponent equals A comma then A is a square matrix


    If A to the power of ´ end exponent equals A, then order of A to the power of ´ end exponent will be same to order of A. So it is a square matrix.

    Book A Free Demo

    +91

    Grade*

    Related Questions to study