# Tagged Questions

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### Good book introducing Inconics

Is there a book on conic sections or triangle geometry that has a particularly good introduction to inconics of a triangle? I am interested in that subtopic now. Ideally, I would like a book that ...
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### Locus of vertex of parabolas through three points

Consider all parabolas through three given points $A,B,C$. What is the locus of the vertex? Qualitatively it traces three branches with the lines through the mid-points of the sides of the triangle ...
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### Good books on conic section.

Can anybody suggest me good books for conics section.I want it for IIT-JEE mains and advanced and also for ISC. It should be available in India .
Do conic sections have an interesting generalization to surfaces of constant curvature? Consider a sphere (constant positive curvature) $\mathcal{S}$ centered at $O$, as well as points $A, B \in ... 1answer 136 views ### Equation of a parabola: Translations and directrixes Find the equation of the paraboles, with: Focus$(3,0)$and$x=-3$is the directrix Focus$(0,2)$and$y=-2$is the directrix Vertex (I believe it is the vertex, the lowest/highest point)$(1,2)\$ ...
My frustration started after hours of searching failed to turn up a formula for the vertex of a parabola in the general form $$Ax^2+Bxy+Cy^2+Dx+Ey+F=0$$ As is already well known, the discriminant ...