MathematicsIf y=xx+x7+7x+77, then dydx=

If y=xx+x7+7x+77, then dydx=

  1. A

    x.xx-1+7x6+x7x-1

  2. B

    xx1+logex+7x6+7x(loge7)

  3. C

    xx1+logex+7x6+x.7x-1

  4. D

    x.xx-1logex+7x6+7x(log7e)

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    Solution:

    y=xx+x7+7x+77 differentiate w.r.to x on both sides dydx=ddx(xx)+ddx(x7)+ddx(7x)+ddx(77) dydx=xx1+logx+7x6+7x log7+0. dydx=xx1+logx+7x6+7x log7

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