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ISI-2004-23

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If $f(x) = x^2$ and $g(x)=x \sin x + \cos x$ then

  1. $f$ and $g$ agree at no points.
  2. $f$ and $g$ agree at exactly one point.
  3. $f$ and $g$ agree at exactly two points.
  4. $f$ and $g$ agree at more than two points.
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