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The number of points where f x = x 2 - 3 x - 4 is non-differentiable is

Options

  1. A1
  2. B2
  3. C3
  4. D4

Correct answer

C. 3

Step-by-step solution

Graph of f x = x 2 - 3 x - 4 is From the graph, we see that f x is non-differentiable at x = 0 , - 4 , 4

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