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Manipal Engineering Manipal Engineering Solved Paper-2013

  • question_answer
    If\[i{{z}^{4}}+1=0\], then\[z\]can take the value

    A) \[\frac{1+i}{\sqrt{2}}\]                                  

    B) \[\cos \frac{\pi }{8}+\mathbf{i}\sin \frac{\pi }{8}\]

    C) \[\frac{1}{4\mathbf{i}}\]                             

    D)        \[\mathbf{i}\]

    Correct Answer: B

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