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azyobuzin/gist:10010717

Created April 6, 2014 19:51
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gistfile1.cs
double Arctan(double x) {
double a = 0;
for (var i = 0; i < 10000; i++) {
var k = 1 + i *2;
if (i % 2 == 0) {
a = a + (1.0 / k * Math.Pow(x, k));
} else {
a = a - (1.0 / k * Math.Pow(x, k));
}
}
return a;
}
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