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12th Class Mathematics Sample Paper Mathematics Olympiad - Sample Paper-3

  • question_answer
    If \[\underset{x\to 0}{\mathop{lim}}\,\left( \frac{\cos \,4x\,+a\,\cos \,2x\,+b}{{{x}^{4}}} \right)\] is finite, then the value of a, b respectively are

    A)  5, - 4              

    B)  - 5, - 4

    C)  - 4, 3           

    D)  4, 5

    Correct Answer: C

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