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Let y=[x+1],-4 x -3 where [.] is the greatest integer function. What is the derivative of y with respect to x at x=-3.5 ?

Options

  1. A-4
  2. B-3.5
  3. C-3
  4. D0

Correct answer

D. 0

Step-by-step solution

aligned & -4 x -3 & -3 x +1 -2 & [ x +1]=-3 & y =-3 & dy dx =0 aligned

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