MathematicsIf [ . ] denotes the greatest integer function and y = tan π7x – 4π41 + 3x – 22, then dydx =

If [ . ] denotes the greatest integer function and y = tan π7x - 4π41 + 3x - 22, then dydx =

  1. A

    sec2 π

  2. B

    sec2π 7x - 4π4 × 287x - 4π31 + 3x - 2π22

  3. C

    secπ tan π4

  4. D

    0

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    Solution:

    The given function is y = tan π7x - 4π41 + 3x - 22

    Since tannπ is zero for any value of n, the above function is zero

    Hence, dydx=0

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