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数学 大学生・専門学校生・社会人

大学数学の問題です。SIRモデルを題材にした微分方程式です。連立微分方程式で解こうと考え、固有値から固有ベクトルを求めようとしましたが綺麗な値にならず、間違っているように感じました。考え方から回答例まで教えていただきたいです。

問題 14. ある感染病Aに対する SIR モデル d.s -BS(t)I(t) ニ dt dI BS(t)I(t) - っI(t) ニ dt dR 1(t) ニ dt を考える。ここで, S(t)は感染可能者, I(t) は感染者, R(t)は除外者である. また, ある町の人口を Nとすれば, N= S(t)+I(t) + R(t) が成り立つとする. そして, s(t) = S(t)/N, i(t) = I(t)/N, r(t) = R(t)/N としたモデル ds ニ dt 1 -i(t) :0 50 di 1 ニ dt dr 1 i(t) 50 ニ dt を考える。 さて, N= 1000 とするとき, 感染病 Aが拡大しないようにするには,少なくとも何人にワクチン接種をしなけ ればならないか?ただし, ワクチンの効果は 90%(ワクチンを接種すれば 10人中9人は感染しない)とし, 初期 感染者は 19名,初期除外者は0名,ワクチン接種は感染可能者のみに行うものとする.(8点) (解答欄:必ず途中式や理由などを記載すること) N=100 基本理産激が121大きとき感染者は増にするをめ、 これが 1さり小さくなるとよい。 VC)をつクチン緒の数だとすると. ds s -) icは) - dt 14 AV At。 271 190 こ Io sCt) 13

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経営経済学 大学生・専門学校生・社会人

統計入門です。 写真の分布の読み取り方がわかりません。 nの方は分かるのですが、aの方がどこを見たらこの数字が出てくるのかが分かりません。 教えて下さい!!

BS8388かちおらこ % 乳尾%2E 2れがバが気がれびu05849 9p8zT_ おおお! a高 2224: ロNの N の P 9 N 認会 0 8にる 88合 6 654 9 0 こ。 ここ PNnan s 富 210 68 a のo F 6 840 s o 2 * の 器S のSN Pミ 当品にa のo Co Cn NSP C N -Nの n 68 DNの のun na ら CD N n nAA にSE5868 ES c0 →a n cn aACe o N-て x*分布の上側a点 *が自由度nの* 分布に従うとき i) >100 のときの値は =(+/2m-2) 全競 Pri'szリー 4'etau=a 【E。は正規分布 N(0, 1) の上側 α 点] i)下側α点の値は x'- をみたす xの値 Competition 「不9 opolistic Competitis *分布 (1) ?分布 (2) /| 0.500 | 0.750 | 0.005 | 0.010 |0.050 |0.975 0.025 0.100 0.250 0.900 0.950 0.990 0.995 7,87 0.400 5,02 7.378 3-348 833」 14.449| 16.013 5.635 0.051 0.216 0.484 |0.831 |1.635| 1.237 | 0 2.700 3.247|| 3.816| 5.226|| 4.404| 3.571| :32 .60 6.25) 7.779| 9.236 0.458 2.366 3.357 0.010 5.99 7.815 9.488| 502 9 | 20.090| 17.535 15.502 」9.037 12.83 14.860 0.584 0.35 0.711 1.145 0.115 0.297 |0.554 |0.872 1.213 0.072 15.08 18.548 || 16.812 18.475 0.412 ーシャルの経 10.645 |0.676 受も有名なの 7.283 8.351 25.188 0 9.023 16.919| 14.68 |26.757 | 2 205 0.483| 18.307 3.325 3.940| 4.575 2.088 25 1623 三の批判者と 3.053 19.675| 17.275| 13.701 | 18.549 14.845 |23685 -612| 15.984 |24.996 2230% | 23.542 27.587| 24.769 20.489 31.526| 28.869 25.989 21.605 27.204| 22.718 31.410| 28.412 23.828 32.671| 29.615| 24.935 33.924|| 30.813|| 26.039 8172| 32.007|| 27.141 40.646| 37 | 33.196| 28.241 41.923 052 34.382 | 29.339 43 10| 38.885 35.563 | 30.435 7.584 | 8.438 12.340 9.299| 13.339 10.153| 14.339| 11.590 12.584 13.636 14.685 庭に生まれ 6.252 15.733 26.296 7.962 8.672 | 702| 10.085 17.938 13.675 10.865 9.390 18.338 14.562 11.651 10.117 19.337| 15.452 12.43| 10.851 20.337 || 16.344 |21.337|| 17.240 22.337 || 18.137| 23.337| 19.037| 24.337| 19.939 25.336| 20.843 26.336|| 21.749 18.114|| 16.151 | 14.573| .010| 27.336 | 22.657 | 18.939 | 16.928 000| り52 13.121 28.336 | 23.567 | 19.768| .00 1 4.954 13.787 29.336| 24.478 | 20.599 | 18.493| 94.336| 29.054| 24.797 | 2.465 |22.164 39.335| 33.660| 9.030| 2 28.366 25.901| 44.335|| 38.291| 49.335 42.942| 300 8.958 36.397 33.570 54.335| 47.610 59.335| 52.294 69.334|| 61.698 79.334 89.334 | 99.334 鞭を執っ 30.191| |7.015 7,633 9.591| 8.260 13.240| 11.591| 10.283 8.897 14.041 12.338 10.982| 9.542 14.848| 13.090 11.688 10.195 15.659| 13.848 | 12.401| 10:000 16.473 14.611 | 13.120| 11.524| 17.292| 15.379 | 13.844 12.198 32.852| 30.144」 34.170 18.868 19.910 20.951 上に反逆 38.932 ー引き合い は激し ゆえの 33.479 44.181 | 41.638 。 45.559 2.980| 39 364 21.991 23.031 24.069 25.106 26.143 27.179 28.214 9200 48.290| 45.642 49.645 46.963 11.160 50.993 | 48.278| 0.113| 36.741| 31.528 52.336|| 49.588 387 37.916 32.620 |53.672 | 50.892 46.979 | 」 39.087 て初め 12.46) 29 249 ャルは 20.293 31.316 43.778 | 40.256 E6o 18 509 17.192 20.707 |60.275 66.766 73.166 79.490 85.749 82.292 | 77.381 57.342 53.203 40.223 45.616 50.985 36.475 目が, 63.691 59.42| 9,80| 46.059 55.758 || 51.805 41.622 46.761 51.892 57.016 .2A310 69.957 27.991 31.734 35.535 43.275 51.1721 33.390| 0 957 29.707 その 76.154|| 120 -556| 57.505 733 | 3.167 56.334| 68.796| 61.665 74.397| 66.981 85.527 96.578 113.145| 107.565 98.650 118.498 | 109.141 40.482 | 37.485 4 758 0202 57 153 | 53.540 69.126 65.647 61.754| 59.196 | 90.133 82.358 || 77.930| 74.222 70.065 67.328 42.003|2 1881 46.459| 55.329 71.145 .54.28 80.625 3.2。 88.379|| 91.952 104.215| 100.425 116.321| 112.329 | 128.299| 124116 02 140.170 135807| 36 83.298 一定さ 62.135 72.368 う26 45.442 90.531 101.879 77.577 |88.130 0 一決め 92.761 .,561 124.342 102.946

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医学 大学生・専門学校生・社会人

論理回路の基礎 ②のNANDゲートのみで、AND.OR.NOT.NOR.Ex-OR回路を設計し、その回路図と途中の状態の真理値表を書く。の所わかる方教えて下さい!!!

A A Y O 論理回路の基礎 0 報告書について 報告書は基本的に PC を使用して書くこと。(Word, Excel, PowerPoint, Pages, Numbers, Keynote, Libre Office などを使用する) インターネットから入手した画像などを添付してもよいが、必ず出典を明記すること。 ード ュ7L ローLト やージナンー )ートイー 報告書の内容 の 基本論理演算回路(AND, OR, NOT, NAND, NOR, Ex-OR)、それぞれの MIL 記号、真理値表、 実習で動作を確認したスイッチによる回路図を書く。(Ex-ORはスイッチの回路図は不要) HAND4S 2 NAND ゲートのみで、AND, OR, NOT, NOR, Ex-OR 回路を設計し、その回路図と途中の状態の NAND3→ NAND4つ 真理値表を書く。 の の例) NAND による AND 表1 NAND による AND の真理値表 記号 A B X Y DD JA 0 0 1 0 0 1 1 0 B 11 0 0 1 1 0 図1 NAND による AND ビース13V この回路図は回路図エディタ「bsch3v」を用いて描きました。真理値表は Excel で書きました。 回路図エディタ「bsch3v」は Windows 専用のフリーソフトですが、使いやすいソフトです。 ほかにも、ドローイングアプリケーション(drawing application:描画ソフト)はいろいろありま すので、インターネットなどで探してみましょう。

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TOEIC・英語 大学生・専門学校生・社会人

TOEIC正解、よろしくお願い致します!

Questions 5-7 refer to the following letter. a new member to the club To welcome confirm To | continued membership Mr. Leonardo Harper 571-45 Heiligenstàdter Street Vienna 1190 の) December 15 Dear Mr. Harper, Thank you for your continued support of the North Vienna Concert Hall We are writing to confirm receipt on December 14 of your North Vienna Club membership renewal payment for next year. Alnterviews with musicians To celebrate our 30 year anniversary, we are happy to announce some new special benefits for club members. Starting next year, club members can receive a 10% discount on any concert held during the first three months of the year. Call our ticket office at 1-5123098 and use the promotional code CZ1713 when you order your tickets. Please note that discounts only apply to pre-orders placed during this special period. IC) Commentaries on 0 The concert schedule performances As always, members will receive our monthly magazine, North Vienna Club, which features concert reviews and interviews with various artists and musicians, together with news and schedules of all of the events at the concert hall. Next month's issue will feature a six-page interview with the world famous conductor Franz Minsky. Once again, we thank you for being a North Vienna Club member and for supporting arts and music in our community. Sincerely, Roy Pophins Roy Hopkins Director North Vienna Concert Hall の の)

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TOEIC・英語 大学生・専門学校生・社会人

わかる人いたら教えてください

¥ Samuel Pepys is the earliest diary- keeper that is famous today. for it gives personal insight into London's Great Plague and the Great Fire. Pepys took diary writing from the realm of business to the individual. His diary is being published on the Internet, and it is interesting to note that there has beena new entry every day since Anne Frars 1929-194。 n January of 2003. It will continue over the course of several years to come. Reading his diary is fascinating. and it makes his life all the more real to us. 63 Today's electronic version of the diary, the web READING PASSAGE log, or “blog," has once again stretched the diary to fopic sentences and supporting sentences of each paragraph be much more than a personal account of the dav's events. There are blogs to document recipes, traveling. ロ movies, independent news, product announcements, allowance." It refers to a book for fragmentary writings by date and is photos, and anything else that needs to be recorded over time. Search engines like Technorati.com have 会 the six volumes of Samuel Pepys diary manuscript 35 been created to keep track of the more than 112 million blogs that are $ diary is a good form of self-study. 日(In America, from the 1940s through the 1980s! a diary was thought of currently public. In its newest incarnation, the diary has become more popular mostly as a way to privately express one's deepest thoughts while keeping notations about the day, In those times, pnd even continuing on today, writin。 in a diary was like writing to a special friend. Many times, movies would show than ever. COMPREHENSION QUESTIONS 9 teenage girl beginning to write in her diary while she said aloud, "Dear diary Decide if each statement is true [T] or false [F]. If it is false, write the sentence correctly. What followed was a synopsis of the day, usually filled with emotion. Those private reflections may have historical significance long after the 1.[]The word “diary" means a collection of stories written every ロ day. author's death. A diary kept by a young German Jewish girl by the name of Anne 2.[] Diary writing in movies illustrates how similar it is to writing to a special friend. Frank provides us with invaluable lessons about history, for she documented Anne kept a record of her private events and thoughts in her diary after she moved to Germany. 15 her experiences while she hid from the Nazis during their occupation of the Netherlands in World War II. Her diary became one of the world's most widely 4.[]Pepys was one of the first diary writers to include his own personal observations of historical events. read books and is the basis for many films. Samuel Pepys, who lived during the 17th century, is the earliest diary-keeper that is famous today. His diary is also an important documentation of history, ロ 5.[、]Today's diaries on the web are changing their characteristic of being secretive. 12

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