Question

Vectors dot product

score 154 · Answer 1 · 2019-04-18 18:34:21

154

Views

Vectors dot product

Published on 18 Apr 2019 - 18:34

score 37 · Answer 2 · 2019-04-19 21:18:11

37

Views

Given: $u, v \in \mathbb{R}^3$ find all vectors $w$ such that $u \cdot v = w \cdot u$

Published on 19 Apr 2019 - 21:18

score 204 · Answer 3 · 2026-03-26 14:42:35

204

Views

How to calculate the vector intersecting a sphere tangent and plane

Published on 26 Mar 2026 - 14:42

score 2k · Answer 4 · 2026-03-28 03:16:09

2k

Views

Prove that $u\cdot v = \frac{1}{4}||u+v||^2 - \frac{1}{4}||u-v||^2 \forall u,v \in \mathbb{R^n}$

Published on 28 Mar 2026 - 3:16

score 22 · Answer 5 · 2026-03-27 06:07:31

22

Views

Simplify $c_i=a_j\frac{\partial b_j}{\partial x_i}$

Published on 27 Mar 2026 - 6:07

score 67 · Answer 6 · 2026-03-30 10:35:46

67

Views

Simplifying $|\vec{A} \times (\vec{B} \times \vec{C})|^2$

Published on 30 Mar 2026 - 10:35

score 76 · Answer 7 · 2026-03-29 19:33:02

76

Views

Clarification in proof of perpendicular bisectors meeting at a point

Published on 29 Mar 2026 - 19:33

score 580 · Answer 8 · 2026-03-27 01:44:02

580

Views

Coordinates of 3D vector in rotated coordinate system (without using a matrix)

Published on 27 Mar 2026 - 1:44

score 108 · Answer 9 · 2019-04-22 22:04:21

108

Views

Find a and b given that $l_1$ and $l_2$ intersect at the midpoint of the line segment $\vec{AB}$

Published on 22 Apr 2019 - 22:04

score 59 · Answer 10 · 2019-04-22 22:30:50

59

Views

Trying to prove an integration by parts formula

Published on 22 Apr 2019 - 22:30

score 23 · Answer 11 · 2026-03-27 03:42:21

23

Views

Questions about the basics of coordinate systems and their basis

Published on 27 Mar 2026 - 3:42

score 1.1k · Answer 12 · 2026-04-01 09:29:34

1.1k

Views

Using partial derivatives to find normal vector

Published on 01 Apr 2026 - 9:29

score 79 · Answer 13 · 2019-04-23 09:38:53

79

Views

Find a and b and the position vector of the point of intersection of C of $l_1$ and $l_2$

Published on 23 Apr 2019 - 9:38

score 57 · Answer 14 · 2026-03-26 12:32:22

57

Views

Why is the angle between vectors restricted?

Published on 26 Mar 2026 - 12:32

score 67 · Answer 15 · 2019-04-23 14:06:35

67

Views

How to prove $v_1\cdot v_2=|v_1||v_2|\cos(\theta)$ in n-dimensions?

Published on 23 Apr 2019 - 14:06

List Question

Vectors dot product

Given: $u, v \in \mathbb{R}^3$ find all vectors $w$ such that $u \cdot v = w \cdot u$

How to calculate the vector intersecting a sphere tangent and plane

Prove that $u\cdot v = \frac{1}{4}||u+v||^2 - \frac{1}{4}||u-v||^2 \forall u,v \in \mathbb{R^n}$

Simplify $c_i=a_j\frac{\partial b_j}{\partial x_i}$

Simplifying $|\vec{A} \times (\vec{B} \times \vec{C})|^2$

Clarification in proof of perpendicular bisectors meeting at a point

Coordinates of 3D vector in rotated coordinate system (without using a matrix)

Find a and b given that $l_1$ and $l_2$ intersect at the midpoint of the line segment $\vec{AB}$

Trying to prove an integration by parts formula

Questions about the basics of coordinate systems and their basis

Using partial derivatives to find normal vector

Find a and b and the position vector of the point of intersection of C of $l_1$ and $l_2$

Why is the angle between vectors restricted?

How to prove $v_1\cdot v_2=|v_1||v_2|\cos(\theta)$ in n-dimensions?

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