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Line 2: The [[Principal branch\|principal]] [[nth root\|''n''th root]] <math>\sqrt[n]{A}</math> of a [[negative and positive numbers\|positive]] [[real number]] ''A'', is the positive real solution of the equation :<math>x^n = A</math>. (~~for~~For an integer ''n'' there are ''n'' distinct [[complex number\|complex]] solutions to this equation if <math>A > 0</math>, but only one is positive and real). There is a very fast-[[Limit of a sequence\|converging]] ''' ''n''th root algorithm''' for finding <math>\sqrt[n]{A}</math>:

Nth root algorithm: Difference between revisions