Talk:Circumconic and inconic
Latest comment: 9 years ago by Loraof in topic Parabola as inconic?
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Inconsistent names: in the first section a, b, c, A, B and C are defined, but u, v and w are used instead.
Parabola as inconic? edit
In the section "Other features", the first item under 'Inconics" says:
- The general inconic reduces to a parabola if and only if
- ubc + vca + wab = 0.
This is uncited, and I don't understand it. How can a parabola, which is unbounded, be an inconic, which is bounded by the triangle? And this equation seems to say that three positives sum to zero, implying that the equation doesn't describe anything. Someone have a clarification? Loraof (talk) 18:51, 25 September 2014 (UTC)