Let $f: R \rightarrow R$ be given by $f(x) = |x^2 - 1|$,then

  • A
    $f$ has a local minima at $x = \pm 1$ but no local maxima
  • B
    $f$ has a local maxima at $x = 0$,but no local minima
  • C
    $f$ has a local minima at $x = \pm 1$ and a local maxima at $x = 0$
  • D
    $f$ has neither any local maxima nor any local minima

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