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JEE Main2010MathematicsApplication of DerivativesActual

Let f: R R be defined by f(x)= array ll k-2 x, & if x -1 2 x+3, & if x>-1 array . . If f has a local minimum at x=-1 , then a possible value of k is

Options

  1. A0
  2. B- 1 2
  3. C-1
  4. D1

Correct answer

C. -1

Step-by-step solution

f(x)=k-2 x if x -1=2 x+3 if x>-1

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