Circles of radius zero interpreted as points

Chris Sangwin shared this question 3 years ago
Answered

There is an interesting difference in behaviour between input

((x-1)^(2)+(y-1)^(2))=0


and

((x-1)^(2)+(y-1)^(2))*((x-2)^(2)+(y-2)^(2))*((x-3)^(2)+(y-3)^(2))=0

I'd expect the latter to be three points, but it isn't!

Comments (1)

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Degenerate conics are all covered; degenerate higher orders not so much :)

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