RosettaCodeData/Task/Nth-root/J/nth-root.j

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2013-04-10 23:57:08 -07:00
'`N X NP' =. (0 { [)`(1 { [)`(2 { [)
iter =. N %~ (NP * ]) + X % ] ^ NP
nth_root =: (, , _1+[) iter^:_ f. ]
10 nth_root 7131.5^10
7131.5