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11th Class Mathematics Sample Paper Maths Olympiad Model Paper-3

  • question_answer
    If \[\frac{c+i}{c-i}=a+i\,b,\] where a, b, c are real, then \[{{a}^{2}}+{{b}^{2}}=\]

    A)  1        

    B)  \[-\,1\]

    C)  \[{{c}^{2}}\]                         

    D)  \[-\,{{c}^{2}}\]

    E)  None of these

    Correct Answer: A

    Solution :

     Not Available               


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