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April 20, 2014

Homework Help: Math

Posted by Anonymous on Tuesday, January 12, 2010 at 4:16pm.

Let I denote the interval [0,oo). For each r (element of) I, define
Ar={(x,y)element of RxR:x^2+y^2=r^2}

Determine (UNION)reI Ar and (INTERSECT)reI Ar

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