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Possible Duplicate:
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 $1$. "

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    @ Nicholas, I have updated it.2012-09-25
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    Now it is exactly like the [previous problem](http://math.stackexchange.com/questions/201958/plotting-the-locus-of-points-equidistant-from-a-point) posted today.2012-09-25
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    @AndréNicolas: but close enough that I vote it a duplicate.2012-09-25

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