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<?php function y($x) { return pow($x, 2);}function integrate($a, $b, $n) { $h = ($b-$a)/$n; $m = (1/2)*$h; $num = 0; for ($i = 1; $i <= $n-1; $i++) { $num += y($a + $i*$h); } return $m*(y($a) + y($b) + $num);}var_dump(integrate(1, 3, 100));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
float(4.383400000000001)
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33
float(4.3834)
preferences:
225.01 ms | 405 KiB | 329 Q