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Find the value of x for which the function y = x3 – x has…

Find the value of x for which the function y = x3 – x has a minimum value.
  • A.
    (-sqrt{3})
  • B.
    (-sqrt{frac{3}{3}})
  • C.
    (sqrt{frac{3}{3}})
  • D.
    (sqrt{3})
Correct Answer: Option C
Explanation