12 lines
222 B
JavaScript
12 lines
222 B
JavaScript
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function nthRoot(num, nArg, precArg) {
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var n = nArg || 2;
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var prec = precArg || 12;
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var x = 1; // Initial guess.
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for (var i=0; i<prec; i++) {
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x = 1/n * ((n-1)*x + (num / Math.pow(x, n-1)));
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}
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return x;
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}
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