50. Prove Property 6 of cross products, that is, аx (bx c) %3D (а с)Ь — (а - b)с

Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.1: Postulates For The Integers (optional)
Problem 26E: Prove that the cancellation law for multiplication holds in Z. That is, if xy=xz and x0, then y=z.
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Hello, 

I have a question regards vectors in calc,

Fist question I would love to know the prove of a propertie. ( see picture 1)

Second question is about determining the state of the lines. ( see picture 2)

Thnak you.

 

50. Prove Property 6 of cross products, that is,
аx (bx с) — (а с)Ь — (а )с
Transcribed Image Text:50. Prove Property 6 of cross products, that is, аx (bx с) — (а с)Ь — (а )с
2
y - 3
z - 1
21. Lị:
1
-2
-3
:- 2
х — 3
L2:
1
y + 4
3
-7
22. L:: 수=
у — 1
z - 2
1
-1
3
x - 2
L;:
у — 3
-2
7
Transcribed Image Text:2 y - 3 z - 1 21. Lị: 1 -2 -3 :- 2 х — 3 L2: 1 y + 4 3 -7 22. L:: 수= у — 1 z - 2 1 -1 3 x - 2 L;: у — 3 -2 7
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