Question

In the ellipse-related formula $c^2=a^2-b^2$, is $a$ always the biggest number, or can it be the smallest?

score 1k · Answer 1 · 2019-11-14 17:35:03

1k

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In the ellipse-related formula $c^2=a^2-b^2$, is $a$ always the biggest number, or can it be the smallest?

Published on 14 Nov 2019 - 17:35

score 1.1k · Answer 2 · 2026-03-27 01:13:19

1.1k

Views

Algorithm to find common tangent to any two conics

Published on 27 Mar 2026 - 1:13

score 103 · Answer 3 · 2026-03-27 04:38:12

103

Views

Dip of the horizon line onto ellipse behind the tangency point

Published on 27 Mar 2026 - 4:38

score 285 · Answer 4 · 2019-11-15 23:31:45

285

Views

Solving for Ellipsoidal shape with only one ellipsoidal slice

Published on 15 Nov 2019 - 23:31

score 242 · Answer 5 · 2019-11-16 17:50:36

242

Views

How to find direction vector of a ray after getting reflected from the surface of an ellipsoid?

Published on 16 Nov 2019 - 17:50

score 67 · Answer 6 · 2026-03-29 18:36:32

67

Views

Finding the eccentricity of the hyperbola $\left|\sqrt{(x-3)^2+(y-2)^2}\right|-\sqrt{(x+1)^2+(y+1)^2}=1$

Published on 29 Mar 2026 - 18:36

score 191 · Answer 7 · 2019-11-19 09:00:15

191

Views

Property of Ellipse evolute

Published on 19 Nov 2019 - 9:00

score 60 · Answer 8 · 2026-04-01 17:22:38

60

Views

How to solve this hyperbolic problem?

Published on 01 Apr 2026 - 17:22

score 69 · Answer 9 · 2019-11-20 16:05:31

69

Views

Find the area of the ellipse.

Published on 20 Nov 2019 - 16:05

score 195 · Answer 10 · 2019-11-21 15:36:45

195

Views

Find equation of chord to a parabola $y^2=4ax$ given its midpoint $(x_1,y_1)$

Published on 21 Nov 2019 - 15:36

score 119 · Answer 11 · 2019-11-22 01:04:06

119

Views

Why is the graph of $8x^2+8xy+2y^2+2x+y+5=0$ empty?

Published on 22 Nov 2019 - 1:04

score 117 · Answer 12 · 2019-11-23 17:11:37

117

Views

When does $2hxy + 2gx + 2fy + c =0$, with $h\neq 0$, represent a pair of straight lines?

Published on 23 Nov 2019 - 17:11

score 94 · Answer 13 · 2019-11-25 12:43:44

The locus of the center of a variable conic inscribed in a triangle, such that the sum of the squares of its axes is constant

score 65 · Answer 14 · 2026-04-01 22:27:51

65

Views

Assembling a 3-manifold from its level surfaces -- how to glue a cylinder to a ball?

Published on 01 Apr 2026 - 22:27

score 143 · Answer 15 · 2026-03-26 12:42:50

143

Views

Construct axis if you have drawn $y=x^2$ plot

Published on 26 Mar 2026 - 12:42

List Question

In the ellipse-related formula $c^2=a^2-b^2$, is $a$ always the biggest number, or can it be the smallest?

Algorithm to find common tangent to any two conics

Dip of the horizon line onto ellipse behind the tangency point

Solving for Ellipsoidal shape with only one ellipsoidal slice

How to find direction vector of a ray after getting reflected from the surface of an ellipsoid?

Finding the eccentricity of the hyperbola $\left|\sqrt{(x-3)^2+(y-2)^2}\right|-\sqrt{(x+1)^2+(y+1)^2}=1$

Property of Ellipse evolute

How to solve this hyperbolic problem?

Find the area of the ellipse.

Find equation of chord to a parabola $y^2=4ax$ given its midpoint $(x_1,y_1)$

Why is the graph of $8x^2+8xy+2y^2+2x+y+5=0$ empty?

When does $2hxy + 2gx + 2fy + c =0$, with $h\neq 0$, represent a pair of straight lines?

The locus of the center of a variable conic inscribed in a triangle, such that the sum of the squares of its axes is constant

Assembling a 3-manifold from its level surfaces -- how to glue a cylinder to a ball?

Construct axis if you have drawn $y=x^2$ plot

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