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kellymcdow5135
31.07.2019 •
Mathematics
Find the locus of the point (x,y) which is a distance 3 from the point (-2, 1)
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Ответ:
1. rule: Circle is the locus of the points which are on the same distance from the given point. Common view of the equation is: (x-a)²+(y-b)²=r², where r - the distance from the given point to the described locus, a&b - coordinates of the given point.
2. using item 1:
(x+2)²+(y-1)²=3² or (x+2)²+(y-1)²=9.
Ответ: