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Plotting the locus of points equidistant from a point
I'm trying to solve this question, I encountered whiles reading a multivariate analysis book and i need assistance. An explaination will do. "Define the distance from $ P(x_{1}, x_{2})$ to the origin as $ d(O,P) = max(|x_{1}|,|x_{2}|)$. I'm done with the first part of the question. I'm to plot the locus of points whose squared distance from the origin is $1$. "