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

  • question_answer
    The function \[f(\theta )=\frac{d}{d\theta }\int\limits_{0}^{\theta }{\frac{dx}{1-\cos \theta \cos x}satisfies}\]

    A)  \[\frac{df}{d\theta }+2f(\theta )cot\theta =0\]                

    B)  \[\frac{df}{d\theta }-2f(\theta )cot\theta =0\]

    C)  \[\frac{df}{d\theta }+2f(\theta )=0\]

    D)  \[\frac{df}{d\theta }-2f(\theta )=0\]

    Correct Answer: A

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