12th Class Mathematics What Can You Become

  • question_answer 1)
    If  find K so that A2 = KA ? 2I.  

    Answer:

    Given A2 = KA ? 2I                   On comparing corresponding elements       3K ? 2 = 1;  ?2K = ?2       4K = 4;  ?2K ? 2 = ?4       From above, we get K =1.  


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