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12th Class Mathematics Sample Paper Maths Olympiad Model Paper-8

  • question_answer
    \[\frac{d}{dx}\left( \frac{\sec x+\tan x}{\sec x-\tan x} \right)=\]

    A)  \[\frac{2\cos x}{{{(1-\sin x)}^{2}}}\]   

    B)  \[\frac{\cos x}{{{(1-\sin x)}^{2}}}\]

    C)  \[\frac{2\cos x}{1-\sin x}\]                     

    D)  All of these

    E)  None of these

    Correct Answer: A

    Solution :

    Not Available    


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