12th Class Mathematics Sample Paper Maths Olympiad Model Paper-9

  • question_answer
    The partial fractions of are \[\frac{{{x}^{4}}+24{{x}^{2}}28}{{{({{x}^{2}}+1)}^{3}}}\] are

    A)  \[\frac{1}{({{x}^{2}}+1)}+\frac{22}{{{({{x}^{2}}+1)}^{2}}}+\frac{5}{{{({{x}^{2}}+1)}^{3}}}\]

    B)  \[\frac{1}{({{x}^{2}}+1)}+\frac{22}{{{({{x}^{2}}+1)}^{2}}}-\frac{5}{{{({{x}^{2}}+1)}^{3}}}\]

    C)  \[\frac{1}{({{x}^{2}}+1)}-\frac{22}{{{({{x}^{2}}+1)}^{2}}}-\frac{5}{{{({{x}^{2}}+1)}^{3}}}\]

    D)  \[\frac{1}{({{x}^{2}}+1)}+\frac{22}{2\,\,{{({{x}^{2}}+1)}^{2}}}-\frac{3}{{{({{x}^{2}}+1)}^{3}}}\]

    E)  None of these

    Correct Answer: A


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