Maths-
General
Easy

Question

Let M and N be two 3×3 non- singular symmetric matrices such that MN equals NM .If P to the power of T end exponent denotes the transpose of the matrix P, then M to the power of 2 end exponent N to the power of 2 end exponent open parentheses M to the power of T end exponent N close parentheses to the power of negative 1 end exponent open parentheses M N to the power of negative 1 end exponent close parentheses to the power of T end exponent is equal to

  1. M to the power of 2 end exponent    
  2. N to the power of 2 end exponent    
  3. MN    
  4. NM    

The correct answer is: M to the power of 2 end exponent


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