Question

Find all vectors $X=(x,y,z)$ for which $(1,3,5)\cdot X=(2,4,6)\cdot X$.

score 38 · Answer 1 · 2026-04-16 15:54:40

38

Views

Find all vectors $X=(x,y,z)$ for which $(1,3,5)\cdot X=(2,4,6)\cdot X$.

Published on 16 Apr 2026 - 15:54

score 67 · Answer 2 · 2026-04-11 10:24:50

67

Views

How to find a normal vector from a vectorial equation?

Published on 11 Apr 2026 - 10:24

score 64 · Answer 3 · 2026-04-17 10:15:29

64

Views

$d_1^2\cdot d_2^2=a^2\cdot c^2+b^2\cdot d^2$ iff $A+C=\frac{\pi}{2}$ or $B+D=\frac{\pi}{2}$.

Published on 17 Apr 2026 - 10:15

score 180 · Answer 4 · 2026-04-16 08:43:38

180

Views

Vector area of a lampshade

Published on 16 Apr 2026 - 8:43

score 209 · Answer 5 · 2026-03-26 10:59:52

209

Views

Find the Tangent line that intersects the graph at another point

Published on 26 Mar 2026 - 10:59

score 6k · Answer 6 · 2026-04-12 20:31:34

6k

Views

Convert a Cartesian vector to a cylindrical vector

Published on 12 Apr 2026 - 20:31

score 1.4k · Answer 7 · 2026-04-15 19:12:08

1.4k

Views

Least value of unit vector $|a+b|^2+|b+c|^2+|c+a|^2$

Published on 15 Apr 2026 - 19:12

score 257 · Answer 8 · 2026-04-21 16:20:55

257

Views

Torsion coefficient

Published on 21 Apr 2026 - 16:20

score 1.1k · Answer 9 · 2026-04-17 09:55:03

1.1k

Views

Find a unit normal vector at a point

Published on 17 Apr 2026 - 9:55

score 31 · Answer 10 · 2026-04-13 04:19:56

31

Views

What does it mean when λ = μ when solving 2 lines intersection in 3D?

Published on 13 Apr 2026 - 4:19

score 770 · Answer 11 · 2026-04-09 02:50:07

770

Views

Is it possible to use the cross product as a measure of similarity?

Published on 09 Apr 2026 - 2:50

score 79 · Answer 12 · 2026-04-14 05:43:52

79

Views

Linear Independency of $3$ vectors

Published on 14 Apr 2026 - 5:43

score 322 · Answer 13 · 2026-04-15 03:33:56

Let P be any point inside a acute angled triangle, prove that PA.PB.AB+ PB. PC .BC +PC .PA .CA> AB .BC. CA. also equality holds if P is orthocenter.

score 59 · Answer 14 · 2026-04-13 17:52:08

59

Views

Moving the common base of two triangles $\bigtriangleup P_1AB$ and $\bigtriangleup P_2AB$ to make them perpendicular

Published on 13 Apr 2026 - 17:52

score 153 · Answer 15 · 2026-04-11 02:01:18

153

Views

Problem with calculation of dot product of two vectors

Published on 11 Apr 2026 - 2:01

List Question

Find all vectors $X=(x,y,z)$ for which $(1,3,5)\cdot X=(2,4,6)\cdot X$.

How to find a normal vector from a vectorial equation?

$d_1^2\cdot d_2^2=a^2\cdot c^2+b^2\cdot d^2$ iff $A+C=\frac{\pi}{2}$ or $B+D=\frac{\pi}{2}$.

Vector area of a lampshade

Find the Tangent line that intersects the graph at another point

Convert a Cartesian vector to a cylindrical vector

Least value of unit vector $|a+b|^2+|b+c|^2+|c+a|^2$

Torsion coefficient

Find a unit normal vector at a point

What does it mean when λ = μ when solving 2 lines intersection in 3D?

Is it possible to use the cross product as a measure of similarity?

Linear Independency of $3$ vectors

Let P be any point inside a acute angled triangle, prove that PA.PB.AB+ PB. PC .BC +PC .PA .CA> AB .BC. CA. also equality holds if P is orthocenter.

Moving the common base of two triangles $\bigtriangleup P_1AB$ and $\bigtriangleup P_2AB$ to make them perpendicular

Problem with calculation of dot product of two vectors

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