VIT Engineering VIT Engineering Solved Paper-2007

  • question_answer
    The imaginary part of \[\frac{{{(1+i)}^{2}}}{i\,(2i-1)}\]is :

    A)  \[\frac{4}{5}\]

    B)  \[0\]

    C)  \[\frac{2}{5}\]

    D)  \[-\frac{4}{5}\]

    Correct Answer: D

    Solution :

    \[\frac{{{(1+i)}^{2}}}{i\,(2i-1)}=\frac{1+{{i}^{2}}+2i}{i\,(2i-1)}=\frac{2i}{i\,(2i-1)}\]  \[=\frac{2(2i+1)}{4{{i}^{2}}-1}=\frac{4i+2}{-4-1}=-\frac{4}{5}i-\frac{2}{5}\] \[\therefore \] Imaginary part of\[\frac{{{(1+i)}^{2}}}{i(2i-1)}=-\frac{4}{5}\]


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