2018年2月21日水曜日

学習環境

数学読本〈6〉線形写像・1次変換/数論へのプレリュード/集合論へのプレリュード/εとδ/落ち穂拾い など(松坂 和夫(著)、岩波書店)の第22章(図形の変換の方法 - 線形写像・1次変換)、22.3(1次変換による色々な図形の像)、固有値と固有ベクトル、問25-(2).を取り組んでみる。



    1. det ( x - 1 1 - 2 x - 3 ) = x 2 - 4 x + 5
      D 4 = 4 - 5 = - 1 < 0

      固有多項式は実数解をもたないので、固有値、固有ベクトルなし。

コード(Emacs)

Python 3

#!/usr/bin/env python3
from sympy import pprint, symbols, Matrix, solve

x = symbols('x')
A = Matrix([[1, -1],
            [2, 3]])
E = Matrix([[1, 0],
            [0, 1]])
eq = (x * E - A).det()

for t in [eq, solve(eq)]:
    pprint(t)
    print()

入出力結果(Terminal, Jupyter(IPython))

$ ./sample25.py
(x - 3)⋅(x - 1) + 2

[2 - ⅈ, 2 + ⅈ]

$

1 コメント :

คาสิโนออนไลน์ Gclub sbobetさんのコメント...

Police raid police ball shooting. Out of the office
Goldclub Slot We have a lot of games. The standard casino games. Games that give you a better betting option. Fun to create a view on the path of online gambling services. Games that meet the needs of the players every day, there are interesting news. Muang Samut Prakan Police Station Reportedly shot two deaths caused by the office. Soi Nita Sawan, Paknam, Muang Samutprakarn. 3-storey office building and a private car garage. Ramkamhaeng 2, about 1 rai.

Coffee table First Class Office Mr. Sirisak Tiensawan is 41 years old. The son of Mr. Candid Candi Suwan, former director of Samutprakarn. Shot with a firearm at the body. Sleep at the floor The body of Mr. Wanchai Arunsin Thara was found. Condition was shot dead chair against The cause of the police is Thai Damrongritsri Thailand was driving a four-door pickup Bronze Golden escape.

I do not know. The trip to the city of Samutprakarn. With a gun size It is expected that the two sides negotiate the management of the bus, the cause may be dissatisfied before the incident, the news and there are interesting games to introduce you to know each other. Playing Online Games We have online casino games. Relaxing games to the path of fun people throughout the day. We are happy to provide services to the players. Join the game on mobile. We can play 24 hours a day. goldclub slot สมัคร

コメントを投稿

関連コンテンツ