Question

Shadow rushed by a disk in space

score 24 · Answer 1 · 2020-06-01 22:35:48

24

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Shadow rushed by a disk in space

Published on 01 Jun 2020 - 22:35

score 1.2k · Answer 2 · 2026-04-01 09:51:06

1.2k

Views

IMO complex number geometry problems

Published on 01 Apr 2026 - 9:51

score 183 · Answer 3 · 2020-06-03 20:08:32

183

Views

Solution verification: given the point $T$ and the line $p$, find the distance between their orthogonal projections onto the plane $\pi$.

Published on 03 Jun 2020 - 20:08

score 49 · Answer 4 · 2020-06-04 15:10:33

49

Views

If real $x$ and $y$ satisfy $x^2+y^2-4x+10y+20=0$, then prove that $y+7-3\sqrt{2}\le x\le y+7+3\sqrt{2}$

Published on 04 Jun 2020 - 15:10

score 35 · Answer 5 · 2020-06-04 16:17:15

35

Views

Existence of $f$ such that $f(x,|x|^2)f(y,|y|^2)=0$ whenever $x \cdot y=0$

Published on 04 Jun 2020 - 16:17

score 69 · Answer 6 · 2020-06-05 02:59:13

69

Views

Intersection of Lines and Planes (Highschool math)

Published on 05 Jun 2020 - 2:59

score 178 · Answer 7 · 2026-03-26 06:30:59

178

Views

Locus of a moving point, such that two distances have a common ratio

Published on 26 Mar 2026 - 6:30

score 82 · Answer 8 · 2026-03-26 06:21:36

82

Views

Locus of a moving point, when constraints on an angle and length are given

Published on 26 Mar 2026 - 6:21

score 325 · Answer 9 · 2020-06-05 10:27:39

325

Views

A line $L_0: 2x+5y=11$ rotates about a point $P(\alpha, \beta)$ on the line $L_0$ such that $\alpha$ and $\beta$ are integers [CONT..]

Published on 05 Jun 2020 - 10:27

score 231 · Answer 10 · 2020-06-05 11:51:55

231

Views

What is the homogenous parametric equation of a line given two points?

Published on 05 Jun 2020 - 11:51

score 81 · Answer 11 · 2020-06-06 19:32:50

81

Views

Prove by using vectors $(\vec {AP} +\vec {CP}+\vec {BP})=\vec 0$

Published on 06 Jun 2020 - 19:32

score 70 · Answer 12 · 2020-06-08 17:56:59

70

Views

What is the cube equivalent to the given equation describing square?

Published on 08 Jun 2020 - 17:56

score 234 · Answer 13 · 2026-03-27 08:38:50

234

Views

Spheric equation to Cartesian equation

Published on 27 Mar 2026 - 8:38

score 576 · Answer 14 · 2026-03-27 14:59:13

576

Views

Find the distance between the points of two tangents along a circle

Published on 27 Mar 2026 - 14:59

score 1.2k · Answer 15 · 2020-06-09 12:34:36

1.2k

Views

How to calculate geodesic sphere vertex coordinates?

Published on 09 Jun 2020 - 12:34

List Question

Shadow rushed by a disk in space

IMO complex number geometry problems

Solution verification: given the point $T$ and the line $p$, find the distance between their orthogonal projections onto the plane $\pi$.

If real $x$ and $y$ satisfy $x^2+y^2-4x+10y+20=0$, then prove that $y+7-3\sqrt{2}\le x\le y+7+3\sqrt{2}$

Existence of $f$ such that $f(x,|x|^2)f(y,|y|^2)=0$ whenever $x \cdot y=0$

Intersection of Lines and Planes (Highschool math)

Locus of a moving point, such that two distances have a common ratio

Locus of a moving point, when constraints on an angle and length are given

A line $L_0: 2x+5y=11$ rotates about a point $P(\alpha, \beta)$ on the line $L_0$ such that $\alpha$ and $\beta$ are integers [CONT..]

What is the homogenous parametric equation of a line given two points?

Prove by using vectors $(\vec {AP} +\vec {CP}+\vec {BP})=\vec 0$

What is the cube equivalent to the given equation describing square?

Spheric equation to Cartesian equation

Find the distance between the points of two tangents along a circle

How to calculate geodesic sphere vertex coordinates?

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