Question

Finding second vector given a vector and the angle between the two

score 4k · Answer 1 · 2018-09-19 19:47:42

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Finding second vector given a vector and the angle between the two

Published on 19 Sep 2018 - 19:47

score 3.1k · Answer 2 · 2018-09-20 08:20:27

3.1k

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Find the line through $P = (2,4,7) $ that intersects and is perpendicular to the line : $x = -1 + t, y = -2 + 3t, z = 4 $

Published on 20 Sep 2018 - 8:20

score 366 · Answer 3 · 2026-03-25 18:53:39

366

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Two vectors with the same normal surface projection and the same normal surface cross product, are equal?

Published on 25 Mar 2026 - 18:53

score 80 · Answer 4 · 2018-09-21 02:38:37

80

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Optimizing curvature of $\frac{\sin(x)}x$

Published on 21 Sep 2018 - 2:38

score 2.1k · Answer 5 · 2026-03-25 17:21:44

2.1k

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Prove that if in a tetrahedron if two pairs of opposite edges are perpendicular then the third pair is also perpendicular.

Published on 25 Mar 2026 - 17:21

score 78 · Answer 6 · 2018-09-21 23:18:20

Suppose v⃗ ,w⃗ are linear combinations of u⃗ 1 and u⃗ 2. Prove that 2v⃗ +3w⃗ is also a linear combination of u⃗ 1 and u⃗ 2.

score 1.2k · Answer 7 · 2026-03-25 07:06:07

1.2k

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Projectile Motion using Calculus

Published on 25 Mar 2026 - 7:06

score 4.1k · Answer 8 · 2018-09-22 11:13:14

4.1k

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True or false: every non-zero vector is parallel to a unit vector

Published on 22 Sep 2018 - 11:13

score 91 · Answer 9 · 2018-09-23 13:14:49

91

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Let $V$ be a vector space and $\dim(V) ≥ 2$. How to prove with that information that there exists three points that are not on the same line?

Published on 23 Sep 2018 - 13:14

score 51 · Answer 10 · 2026-03-25 04:30:57

51

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Finding Cartesian/symmetric form using $x,y$ and $z$

Published on 25 Mar 2026 - 4:30

score 171 · Answer 11 · 2026-03-27 16:12:17

171

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Evaluating Expressions with Kronecker Deltas

Published on 27 Mar 2026 - 16:12

score 255 · Answer 12 · 2018-09-24 05:29:20

255

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Consider the plane $P_1 : 3x − 5y + 2z = 1$ in $\Bbb{R^3}$

Published on 24 Sep 2018 - 5:29

score 326 · Answer 13 · 2018-09-24 14:49:29

326

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Geometric meaning of the quantity $|a|^2 |b|^2 |c|^2 - (a \cdot b)(b \cdot c)(c \cdot a)$ for non-coplanar vectors $a$, $b$, $c$

Published on 24 Sep 2018 - 14:49

score 713 · Answer 14 · 2026-03-27 17:57:39

713

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Most general definition of a normal vector to an affine subspace of a Euclidian space

Published on 27 Mar 2026 - 17:57

score 348 · Answer 15 · 2018-09-24 19:52:45

348

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Vector equation of plane $3x − 5y + 2z = 1$ in $\mathbb{R}^{3}$

Published on 24 Sep 2018 - 19:52

List Question

Finding second vector given a vector and the angle between the two

Find the line through $P = (2,4,7) $ that intersects and is perpendicular to the line : $x = -1 + t, y = -2 + 3t, z = 4 $

Two vectors with the same normal surface projection and the same normal surface cross product, are equal?

Optimizing curvature of $\frac{\sin(x)}x$

Prove that if in a tetrahedron if two pairs of opposite edges are perpendicular then the third pair is also perpendicular.

Suppose v⃗ ,w⃗ are linear combinations of u⃗ 1 and u⃗ 2. Prove that 2v⃗ +3w⃗ is also a linear combination of u⃗ 1 and u⃗ 2.

Projectile Motion using Calculus

True or false: every non-zero vector is parallel to a unit vector

Let $V$ be a vector space and $\dim(V) ≥ 2$. How to prove with that information that there exists three points that are not on the same line?

Finding Cartesian/symmetric form using $x,y$ and $z$

Evaluating Expressions with Kronecker Deltas

Consider the plane $P_1 : 3x − 5y + 2z = 1$ in $\Bbb{R^3}$

Geometric meaning of the quantity $|a|^2 |b|^2 |c|^2 - (a \cdot b)(b \cdot c)(c \cdot a)$ for non-coplanar vectors $a$, $b$, $c$

Most general definition of a normal vector to an affine subspace of a Euclidian space

Vector equation of plane $3x − 5y + 2z = 1$ in $\mathbb{R}^{3}$

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