>> quad

QUAD:
  MATLAB version
  Estimate the integral of f(x) from A to B.
  f(x) = 50 / ( pi * ( 2500 * x * x + 1 ) ).

  A        = 0.000000
  B        = 10.000000
  N        = 10000000
  Exact    = 0.499363

  Estimate = 0.499371
  Error    = 0.000008
  Time     = 161.133089
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