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KVPY Sample Paper KVPY Stream-SX Model Paper-30

  • question_answer
    Number of solutions of the equation, \[[y+[y]]=2\text{ }cos\text{ }x\]is: \[(where\text{ }y=(1/3)\text{  }\!\![\!\!\text{ }sinx+[sinx+[sinx]]]\] and [  ] - greatest integer function)

    A) 0

    B) 1              

    C) 2

    D) \[\infty \]

    Correct Answer: A

    Solution :

    \[[y]=\cos x\]and \[y=[\sin x]=[\sin x]=\cos x\]not possible for any value of x.


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