Provided is a function [tex] f(x)=\sum_{j=1}^n ||x-x_j||[/tex], for x being a two dimensional vector, where ||.|| denotes the Euclidean distance in 2D space. How could one obtain a derivative of such a function?(adsbygoogle = window.adsbygoogle || []).push({});

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# Derivative of a function involving square root of sum of squares

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