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<?php $from = -2; $to = 6; $segments = 20; $f = function($x) { return ($x ** 2) + (2 * $x) + 3; }; $step = ($to - $from) / $segments; $A = 0; for ($x = $from + ($step / 2); $x < $to; $x += $step) { $A += $f($x) * $step; } echo $A;
Output for git.master, git.master_jit, rfc.property-hooks
130.56

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