🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: fj.education.math
Article #318

ベクトル

#318
From: 航
Date: Sat, 09 Jun 2001 08:32
15 lines
1803 bytes
1.点A(1,2)と点B(-3,3)を通る直線のベクトル表示を求めよ

2.A(5,2)と点B(1,6)を結ぶ線分ABを1:3に内分する点と外分する
点を求めよ

3.次の一次方程式の定める直線のベクトル表示を求めよ
 (1)2x-y=3  (2)2x+3y=1

4.ベクトルa,bにちうて、次を示せ
(1)|a-b|≦|a||b|    (Schwartzの不等式)
(2)|a+b|≦|a|+|b|

数学(線形代数)の教科書を目に穴が開くほど読んで
理解したつもりなんだけど 上の3つの問題がわかりません。
どなたか解き方教えてください お願いします
Technical Details
Message-ID: <t7lU6.701$Uv1.25627@news1>
Path: arc1-ca.pugleaf.net!archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!komachi.sp.cs.cmu.edu!news.ks-and-ks.ne.jp!feed1.dion.ne.jp!news0.dion.ne.jp!news1!not-for-mail

Show Full Headers
Complete Article Headers
X-Google-Language: Japanese,JIS
X-Google-Thread: 1065a2,e64ed2a51baa204f,start
X-Google-Attributes: gid1065a2,public
X-Google-ArrivalTime: 2001-06-09 01:29:17 PST
Path: arc1-ca.pugleaf.net!archiver1.google.com!newsfeed.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!komachi.sp.cs.cmu.edu!news.ks-and-ks.ne.jp!feed1.dion.ne.jp!news0.dion.ne.jp!news1!not-for-mail
Reply-To: "航" <twataru@f4.dion.ne.jp>
From: "航" <twataru@f4.dion.ne.jp>
Newsgroups: fj.education.math
Subject: ベクトル
Lines: 16
MIME-Version: 1.0
Content-Type: text/plain;
 charset="iso-2022-jp"
Content-Transfer-Encoding: 7bit
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.50.4133.2400
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4133.2400
Message-ID: <t7lU6.701$Uv1.25627@news1>
Date: Sat, 9 Jun 2001 17:32:41 +0900
NNTP-Posting-Host: 210.196.28.71
X-Trace: news1 992075353 210.196.28.71 (Sat, 09 Jun 2001 17:29:13 JST)
NNTP-Posting-Date: Sat, 09 Jun 2001 17:29:13 JST
Organization: DDI Integrated Open Network