2021青山学院大学（経済）過去問です 1〜4までお願いします😿

青山学院大 - 経済 TV 以下の問題については解答用紙 (その2) を使用すること. ある都市における感染症の流行の推移を, 3つの数列の漸化式で表した. 漸化式はn= 1,2,3,‥‥…‥‥.で成り立つものとする. Petr Sn+1/ S-βSnIn ・① In+1 = In + BSInvIn･･ ② Rn+1 = RntyIn = ここで Sn, In, Rn は, それぞれ第2週における未感染者数, 感染者数, 回復者数を表す. QUEN およびは,それぞれ感染率, 回復率を示し, 0<β<1,0 < < 1 とする. また 2βSm を基本再生産数, HU BN を第n S1 = N > 0, I = M > 0, R = 0, βI < 1 とする. 週の実効再生産数と呼ぶ. このとき次の問いに答えよ. Y 7 (4) 2021年度 数学 61 (1) Sn + In + R を求めよ. BN (2) > 1 を仮定して, In のグラフ (n が横軸、 In が縦軸)をかけ、さらにその特徴を 記述せよ. Y BN - KILA (3) 理由 「基本再生産数」と「実効再生産数」の用語を使って説明せよ。 ただし 公比の絶対値が1未満の等比数列{an} は, nが限りなく大きくなるとき りなく近づくという性質は使ってもよい. が0に限 秋か考 博美 27-01 12: ANLE <1となるためにはどうすればよいか. ｢感染率」, 「回復率」の用語を使って 例 を挙げて具体的に説明せよ. OXX3

（2）の解説がよく分かりません。変形から先を教えて頂きたいです！

〇和が -) 数列の 例題 310 漸化式と確率 (3) 数直線上を原点から右 (正の向き) に硬貨を投げて進む。 表が出れば 1 進み, 裏が出れば2進むものとする。 このようにして, ちょうど点nに到 達する確率をpm で表す. ただし, nは自然数とする. ( (1) 3以上のnについて, n と D-1, D-2 との関係式を求めよ. (2)≧3) を求めよ. 48305 ++ ■解答 (1) 点nに到達するのは, 点 (n-1) に到達して表 が出る場合か、点 (n-2) に到達して裏が出る場 immi mm 合である。よって, n≧3のとき, 考え方 (1) 点nに到達するのは、次の2つの場合が考えられる. (ii) (i) (n-1)に到達して、 表が出る. imm (ii) (-2)に到達して, 裏が出る. (大豆北) 1 (2) pn=12pn-1+1pn-2 を変形して, Focus P₁= G-LAL 初項 1 pn=Pn-1 • 2 + pn-2 • 1² = 12 Pn-1 + ½ pr-: 2 1 A-1293847 12/23 2' Pnt. +/1/2.pn-2 3 p2= だから,数列{bn+1-pn}は, 4 か=21,公比 = 1,公比 - 123の等比数列となり, n-1 n+1 Pn+₁-pn = 1 + (-1) ² - ¹ = (-1)^² ..1 ...... 4 2 数列 pats+ /1/2pm} は隣り合う項が等しいから Pn+₁ + 1/² Pn= P₂ + ²/² P₁ = ³ + 1/2 - 12/1 3 4 よって①,② より p=//{1-(-1/2)^2} n-2 NDOSE 3&<$7/₂2²_1 A2 pn=²3 3 43435 n-1 x2= -x+ Pn-Pn-1=--(Pn-1-Pn-2) Pn-Pn-1=(Pn-1-pn-2) 2 2 2解x=- **** (n-1)+1 n (京都大) 特性方程式 (n−2)+2n ([). 裏 → 23 (i) 点nに到達する1回前の試行に注目して漸化式を作る 3項間 100 2' n 1/12/12/01/11/1/11/11/ βとして Pn-apn-1 B(pn-1-apn-2) に2通りの代入をする. 2 は次のように考える. 1 1_1 P₂= P₁° 2 + 2 = 2 Pit. 3 1 \n +1] || =* = P₂+2 P₁ 2-1 をα, Pn+1 + 1/ Pn=p₂ + 1/2 Pn - 1 + XC 1 2 なとき 第8章

この問題について教えてください。

Americans smile at strangers. This smiling shows that they are friendly. Usually, Japanese don't smile at strangers. When I was sitting in a hotel lobby with 1801916 a Japanese friend, a small group of Americans came into the lobby and smiled at us. dictatoria I smiled too but my Japanese friend did not. He said, "Do you know those Americans?" I said to him, “( )" My friend said, "How strange! Then s why did you smile at them?" I answered, "Because smiling in America is part of good manners." W sysugnal & mise of you who a wo gedwondo alt NOTES stranger w wolnoblido sibil s1w ew edw egengaal 問1 このパラグラフは何について書かれているか, 次の中から1つ選べ。 (6点) ( 520 Doher: ℗ Smiling ni yo di estem or 2 Americans' smile som A 3 A Japanese friend ov timsol 4 Good manners 問2 空所に入れるのに最適な文を、次の中から1つ選べ。 (6) got sodtom 234 2-Yes, I have wanted to see them. VS/TIMECRECEMOS E sgsugnal brogge & misal o 問3 このパラグラフの要旨を、第1~2文を参考にして、30字程度の日本語で答えよ。 ( 10点) ougnot tortom s misal ot gsugna brdose 928 of NSW. Yes, I know them very well. 3) I've never seen them before. Bugat mom aid arisel Hased od 本日内の空 C ers Ils ogsugnal bnoooe BCN SIX0730 S (AD 4* (GON) HER HRN 2.

この問題の考え方解き方がまじでわかりません 答えは　順に　ウ　ウ　イ　イ　ア

【7】図1、2は物体を静止させるためにひもで引いているようすを表している。 図2は台に平行な点線に対する 角度を図1よりもせまくして引いている。 次の問いに答えなさい。 ただし、 滑車や物体と床の間に摩擦はないも のとする。 「おもり 図1 方向 手が物体を引く力のx 方向の分力 →方向 (4) 手が物体を引く力のy 方向の分力 (5) 台が物体を支える力 ア 小さくなる お 図2 イ大きくなる 方向 $1000 B-A HEROS OTRR MOSAIC 100 DOSE D (1) 図2のとき、次の力の大きさは図1と比べてどうなっているか。 下のア~ウから1つずつ選び、 記号で答えなさい｡ -TOX ONION ① おもりにはたらく重力 (2) 3 手が物体を引く力 x 方向 Juhý (0,1 mm 12 A'G ウ変わらない S (8) SA ()

写真の問題の2行目のit dose は何を指していますか？

(B) If the discipline of linguistics has so little to be said in its favour, one might wonder how it continues to flourish as widely as it does. It was never the case that all universities contained a linguistics department, and there are probably fewer of them today than there were in the immediate aftermath of the 1960s wave of enthusiasm. But the many linguistics departments that still exist are fairly secure. In the 21st century, decisions about which subjects should be offered in a university are made not in terms of their intellectual solidity but of which will be cost-effective, by attracting a market of student takers. Linguistics departments are well placed there, for two reasons. (Sampson, Geoffrey. 2017. The Linguistics Delusion, Equinox)

日本文を英語訳する問題です。添削等して頂けると嬉しいです。

32. お盆は先祖のためのお祭りです。 その日に先祖が家族のもとに帰ってくるとされています。 それで、 お墓参りをしたり、 食べ物を供えた りして先祖を迎えるんです。 今でも多くの地域でまだその伝統は守られていますよ。 ハロウィーンがそれに近いって言われるけど、ちょっと違 うかなって思います。 33.A: ということは、最初は僕のこと好きじゃなかったってこと? B: 好きじゃないとかじゃなく、 あなたがどんな人かよく分からなかった。 あなたって、 あまり人を受け入れないし、 人に心を開かないし。 こっちだって距離を置かざるを得なかったのよ。 どうしてあんなに心を閉ざしてたの? 34. A: これまで、 信頼してた何人もの人たちに裏切られた。 それで、 自分の周りにずっと壁を作ってるっていうのかな。 知らないうちにそうな ってた。 B: 約束する、私は絶対に裏切らないって。 それだけは信じて。 だから、 これからはもっと率直に自分の気持ちを話して。

どこが( )抜きになると予想出来ますか？ 教科書はパワーオン3 Part1〜3までの範囲になります。

日本語の意味に合うように( )に英語を入れる問題 * 教科書の文法 連語など 21目 どこが( )で抜かれるのかは自分で考えてみましょう。 例 He will take care of my baby while I am away. This singer will become popular among young people in Thailand. I'm going to hold a farewell party before my friends return to their homeland. The huge winter typhoon will hit the tiny island in the disitrict. They haven't been used to American ways of expressing opinions in public. Anyone in need can ask for help in this shelter. I suppose this is a very difficult matter to deal with. You have to realize the importance of behaving well in public. This device won't give off any smell and allow people to live happily in an easy way. Having a lot of rainy days, we need our raincoats almost every day. No small mobile phones were to be seen in 1980s in Japan. Our company is to hire a thousand of new employees by next mont' This useful machine works well by concentrating its energy ina suan My grandmother was good at using mobile phones in those days. We had to stand all the way in the train from Nagoya to Tokyo. Just like humans, these kinds of monkey tend to be in a bad mood on Mondays. The old zebras wouldn't drink dirty water though they were very thirsty. She seems to gain beauty and looks very young for her age. We have a lot of difficulty having our children study English for a long time. They gave hima sleeping pill so that he could sleep soundly at night. Many nice athletes got together at the PR event in Osaka. Lots of Asian countries will participate in this huge project. You have to finish at least three essays in this week. She stopped breathing due to the overdose, but started to breathe again.

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) close by the lake, I went swimming almost every day during 1 の Lived ◇例題◇ summer. ③ Living [沖縄国際大 の Lives 2 Live ) from a distance, the rock looks like a human face. の Seeing 4 To see 3 Having seen [成城大(経済) 2 Seen )in small doses, this medicine will do you a lot of good. 0 Take 4 Taken [東京薬科大(薬)] Taking Took 4.( )in haste, the book has not a few mistakes. の Writing 4 Written [追手門学院大(経済)) ③ To have written 2 Having written 演習 1 空所に入る最も適切な表現を選びなさい(書きなさい)。 ) up, I saw a swan flying right over my head. の Being looked [桜美林大(経済) ) under a microscope, a fresh snowflake has a delicate six-pointed shape. 4 Having seen [早稲田大(理工)] O Looking 2 To look Looked 1 Seen 2 Seeing 3 To see 4. Deeply ( 1 shock ), she decided never to speak to him again. 3 shocking 2 to shock 4 shocked [東京電機大(I)) )in plain English, the book is easy to understand. 1 To write 2 To have written ③ Writing 4 Written [明治大(経営) 6. Walking across the road, ( 1 a bus knocked him down ③ a bus knocked down him he was by a bus knocked down 4 he was knocked down by a bus [聖隷クリストファー看護大」 ) poor, she could not afford to buy a car. 2 Being の Because 3 Is Which 6 Who 4 Was [金沢工業大(エ)

赤本の問題です。 上からア、ウで合っていますか？？

問1 A: Have you ever been to London? B:( 1 ) I moved to Tokyo ten years ago. A: Do you often go back to London? B: Sometimes. ( A: That's great! 2 od bas のの選択肢 ア. Yes, I grew up there as a child. イ. Yes, I have lived here for three years. ウ. No, I often meet my friends there. エ、 No, I have stayed here for two months. 2の選択肢 ア.Igo to school there every day. イ.I have just started to live here alone. ウ. My parents still live there. エ.I have never worked here before. ot odbo dose dhivw Todbo toso te be e cuuo counce simummoo sw zgnilsol e'olgoog 1210 pnc M2cg fo p

1枚目が問題文、2枚目の(B)のカッコに下の選択肢から当てはまる英単語を選ぶ問題です。 解答お願いしますm(*_ _)m

次の英文(A)の内容を要約して英文(B)を完成させるには、③~ の (o)の中にはどの語 句が入りますか。もっとも適当なものを①~4の中から1つずつ選びなさい。 auon which A job interview can be one of the most stressful experiences you ll ever nave, especially the first one. What should you expect when you ve been invited for an interview? While it's impossible to *"predict exactly what you will be asked, many Japanese companies take a rather *"formulaic approach. It would be in your best interest to become familiar with this approach. in 2020 P BSCamaG Use of First, you will likely be asked to introduce yourself. It's a good idea to keep your answer fairly short and to the point, without getting into too much detail. In addition, you will almost certainly be asked why you want to work for the company. It's very important that you prepare carefully for this question in advance. Your answer representS an op opportunity to make a strong impression on the interviewers by showing your in-depth e Cop knowledge of the company and stating clearly why the company best fits your qualifications, skills, and long-term goals, You should also be prepared to discuss your strengths and weaknesses. You're advised to **emphasize your strengths without sounding *overconfident. If you're asked about your weaknesses, mention one that isn't related to the pe0 position. For example, admitting that you're not a good public speaker probably won't hurt your chances of being hired as a software engineer. At the end of the interview, you may be asked if you have any questions. It's a good idea to prepare some questions in advance in case this opportunity arises. Questions such as career advancement opportunities questions. Finally, end the interview in a polite manner by standing, stating that it was an honor meeting everyone, and bowing. If all goes well, you'll hear from them again soon. Good luck! 295d sldsaus *formulaic:型にはまったesb je9108) and working hours are suitable meoもの never make thisworld peaceful *predict:予測する *emphasize:強調する *overconfident:自信過剰な motivna 【令和3年度 第66回 1級]