Question

Understanding the derivation of the equation for envelopes.

score 65 · Answer 1 · 2026-04-09 10:06:32

65

Views

Understanding the derivation of the equation for envelopes.

Published on 09 Apr 2026 - 10:06

score 148 · Answer 2 · 2026-03-25 09:49:58

148

Views

How to prove: The stereographic projection is orientation reversing (Complex Analysis by Theodore W. Gamelin 1.3.3)?

Published on 25 Mar 2026 - 9:49

score 38 · Answer 3 · 2024-02-28 18:43:53

38

Views

Proof that all congruent shapes that have the same orientation are the result of a rigid motion

Published on 28 Feb 2024 - 18:43

score 99 · Answer 4 · 2026-04-08 10:02:59

99

Views

How to express rotation direction mathematically?

Published on 08 Apr 2026 - 10:02

score 38 · Answer 5 · 2024-02-29 11:41:03

38

Views

Finding the general form for the hyperbola formed by the intersection of a cone and a plane, in the plane of intersection

Published on 29 Feb 2024 - 11:41

score 73 · Answer 6 · 2024-03-01 03:44:22

73

Views

Proving a trivial theorem involving a circle and a line

Published on 01 Mar 2024 - 3:44

score 191 · Answer 7 · 2024-03-02 06:43:12

191

Views

Find a vertex of a tetragon where three vertices are given

Published on 02 Mar 2024 - 6:43

score 28 · Answer 8 · 2026-04-02 06:04:10

28

Views

$\mathrm{e}^{2x+y+z}=x^2+y^2-2x-4y+4$ is a rotation surface?

Published on 02 Apr 2026 - 6:04

score 46 · Answer 9 · 2024-03-03 17:18:39

46

Views

Differential area for sector of a circle

Published on 03 Mar 2024 - 17:18

score 49 · Answer 10 · 2024-03-04 05:46:30

49

Views

find value of a expression $\frac{(y_1-3)(y_2-3)}{x_1x_2}$ under some conditions

Published on 04 Mar 2024 - 5:46

score 28 · Answer 11 · 2026-04-10 18:34:42

28

Views

Can the vertex of a polygon be a convex combination of two other points?

Published on 10 Apr 2026 - 18:34

score 120 · Answer 12 · 2026-04-10 16:13:52

120

Views

A problem on tangent and secant lines

Published on 10 Apr 2026 - 16:13

score 74 · Answer 13 · 2026-04-03 13:13:51

74

Views

What are $r(s)$ and $\theta(s)$ for an ellipse?

Published on 03 Apr 2026 - 13:13

score 47 · Answer 14 · 2024-03-09 16:10:51

47

Views

Proving that the orthogonal projection on the xy-plane of the corner of a cube looking upwards forms a triangle.

Published on 09 Mar 2024 - 16:10

score 75 · Answer 15 · 2026-03-26 18:59:38

75

Views

Determining the curve to which variable line segments are tangent

Published on 26 Mar 2026 - 18:59

List Question

Understanding the derivation of the equation for envelopes.

How to prove: The stereographic projection is orientation reversing (Complex Analysis by Theodore W. Gamelin 1.3.3)?

Proof that all congruent shapes that have the same orientation are the result of a rigid motion

How to express rotation direction mathematically?

Finding the general form for the hyperbola formed by the intersection of a cone and a plane, in the plane of intersection

Proving a trivial theorem involving a circle and a line

Find a vertex of a tetragon where three vertices are given

$\mathrm{e}^{2x+y+z}=x^2+y^2-2x-4y+4$ is a rotation surface?

Differential area for sector of a circle

find value of a expression $\frac{(y_1-3)(y_2-3)}{x_1x_2}$ under some conditions

Can the vertex of a polygon be a convex combination of two other points?

A problem on tangent and secant lines

What are $r(s)$ and $\theta(s)$ for an ellipse?

Proving that the orthogonal projection on the xy-plane of the corner of a cube looking upwards forms a triangle.

Determining the curve to which variable line segments are tangent

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