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  3. 11th Class
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11th Class Mathematics Sample Paper Mathematics Sample Paper-1

  • question_answer
    The range of\[f(x)\text{ }=\text{ }cos\left[ x \right],\text{ }for-\frac{\pi }{2}<x<\frac{\pi }{2}\] is

    A)  \[\left\{ -1,1,\text{ }0 \right\}~\]

    B)  \[\left\{ cos\text{ }1,\text{ }cos\text{ }2,\text{ }1 \right\}\]

    C) \[\left\{ -cos\text{ }1,\text{ }cos\text{ }1,\text{ }1 \right\}\]

    D)  None of these

    Correct Answer: B

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