an+1=(n-1)/(n+1)an、 n≧2のとき、anは初項a2=1、公比(n-1)/(n+1)の等比数列だから、an= ｛(n-1)/(n+1)｝^(n-2)×a2＝ ｛(n-1)(n+1)｝^(n-2) とやったのですが、どうしてこれが間違っているのか教えて欲しいです。

112. 数列 {a} の初項α から第n項am までの和をS と表す. この数列が a=0, a2=1, (n-1)'a=S(n≧1) を満たすとき,一般項 an を求めよ. 'S (京都大)

SIにおける加速度と力の単位、次元を答えよ。という問題なのですが、SIとはなんですか。また解答は加速度：m/s²,力;Nです

vision questⅡ English expression hope70ページ preview 1.date&time 2.numbers(sizes,measurements,etc) 3.prices&Phone numbers listening task 1.... 続きを読む

140 // TIT Activity for Communication 3 Preview Listen to the sentences below. 1 Dates & Times Listening for Numbers the on Enio 1. "The movie starts at 5:20. Can you be ready in ten minutes?" "OK. I'll try." 2. "What time is it now?" "It's 11:30." basalaila awohlsw 3. I have an appointment with the dentist this Thursday, the 10th. M 4. "When does school begin?" "It begins on April 8th." 5. Our school was established in 1965. 6. My family has lived in this town since 2005. 2 Numbers (sizes, measurements, etc.) 1. Two thirds of the students come to school by bus. 2. One mile is about 1,609 meters. 3. The city has a population of about 2.5 million. 4. The temperature dropped to 12°C. 5. APA Air Flight 125 for London will be departing from Gate 14 at 10:15. 3 Prices & Phone numbers 1. The price of this bag is $27.89, but you can have it at 10 percent off. 2. What would you do if you won 100 million yen in a lottery? 3. "A hamburger and a cola, please." "That'll be £2.99." 4. I need €20, but I'm €5 short. 5. My phone number is 612-750-5613. Listening Task Listen to the conversations and choose the correct answers. 1. How much of the earth's surface is covered by ocean? 1 more than one third more than one fourth 監督署 ER 70 3 more than two thirds 4 more than two fifths 2. When were the Olympic Games held in Atlanta? 1 in 1966 2 in 1969 3. How much did the dress cost? 1,100 yen 2 1,800 yen 3 in 1996 4 in 1999 S 8,000 yen ③ 13,000 48,800 yen bluros ④ 30,000 about 200,000 4. How many people can the concert hall hold? ① 1,300 ② 3,000 5. How many people live in the city? ①about 2,000 2 about 12,000 3 about 20,000 ① 207-7300 2207-7003 ③ 702-3300 6. What's the phone number of the restaurant? The number is 510- ④ 702-3003

条件付き確率の PA(B)の意味が分かりません💦 A(B)とはどういう意味なんでしょうか？

7 練習 57 例22において, 条件付き確率 PB (A) を求めよ。 全事象をひとする。 2つの事象 A, B に ついて,条件付き確率P (B) は, Aを全事象としたときに, 事象Bの起こる確率 であり, 次の式で定義される。 ただし, n (A) ≠0 とする。 P₁(B)= n(A∩B) n(A) ・① ①の右辺において, 分母と分子をそれぞれn (L P(A∩B) P₁(B)== P(A) 2 * Expression 例 22において, P(A) はどのような事象の確率が

2項係数に関する問題がわからないので教えてください。

答え教えてください🥲🙏🏻

A Review the text and fill in the blanks. 1. Steve's idea of learning Japanese: Learning Japanese is a piece of ( 2. Steve's confusing experiences: Wasei-eigo ). The situation is much more ( ). Steve thought it was ... apple juice a white shirt a very large house サイダー ワイシャツ マンション ホットケーキ フライドポテト ブレンド (confused) (confused) (confused) 3. What did Steve learn? ( ) is not a bad thing: it's a first ( In English, they say... soda pop ( ) ) shirt ) ) ( ) ) in learning something new. B You are having trouble learning English. What kind of advice would Steve give you? a. I understand your feelings, but there's nothing that I can do for you. b. Don't be afraid of confusion and making mistakes. c. Don't waste your time learning English. Try to find something more EA DOY interesting. Complete the summary by filling in the blanks. would be (1. Steve is a 16-year-old American boy on homestay in Japan. He thought Japanese ) because many words come from English. He had several confusing experiences. He discovered that English words written in katakana sometimes mean something (2. ) in Japanese. For example, means a (3. very large house. Learning Japanese can be (4. ) in learning something new. is the first (5. ), not a ). However, he feels that confusion [condominium / different / easy / step / confusing ]

どなたか答え合わせお願いします🙇‍♀️🙏💦

Ⅰ. 次の太字の英単語に最も近い意味を持つものを,a~d. の中から1つ選びなさい。 解答 は解答用紙1枚目 (マークシート方式) の所定の解答欄にマークしなさい。 (1) opportunity a. charge b. choice chance d. check (3) criterion a standard b. criticism c. agreement d. sequence (5) compensation a. money given or received as payment for a loss b. mathematical statement showing equal parts c. event where people celebrate d. advantage given to only certain people (7) registration a act of recording information b. idea that leads to further discussion c. strong like or appreciation for another d. one part of a larger component (9) distribute a. derive from an original source b. make available to see c. hand out or deliver something d. be different from others (2) reject a. make illegal refuse to accept c. express support d. give an order (4) application formal request a 6. changed behavior official record d. expression of ideas (6) intervention a. event which results in the police arriving b. having the freedom to make decisions c. distance from front to back d. act of coming between groups in a dispute (8) density a. affection for someone or something X. need for food C degree to which an area is filled or covered d. state of ownership (10) circumstance a. outcome of an event b. addition that makes something better c. feeling or action in response to something d. condition or fact that affects a situation

答え合わせお願いします🙇‍♀️🙏💦

Ⅱ. 次の英文の空欄 ( 11 ) から ( 20 )に入る最も適切な英単語を, a. ~d.の中から 1つ選びなさい。 解答は解答用紙1枚目 (マークシート方式)の所定の解答欄にマークし なさい。 2893 000 Lego bricks. (Image source: Wikimedia Commons-CC license) Car made from Lego bricks. Lego has unveiled its first bricks made from recycled plastic bottles and ( 11 ) that it hopes to include the pieces in sets within two years. The prototype 4x2 bricks have been made from PET plastic from ( 12 ) bottles with additives to give them the strength of standard Lego parts, and are the result of three years of ( 13 ) with 250 variations of materials. It has already ( 14 ) plans to remove single-use plastic from boxes, and since 2018 has been ( 15 ) parts from bio-polyethylene (bio-PE), made from sustainably sourced sugarcane. These parts are bendy pieces, such as trees, leaves and accessories for figurines. Tim Brooks, vice-president for environmental ( 16 ) at Lego Group, said the biggest challenge was "rethinking and innovating new materials that are as ( 17 ), strong and high (18) as our existing bricks and fit with Lego elements made over the past 60 years". He added: "We're committed to playing our part in building a sustainable future for generations of children. We want our products to have a positive ( 19 ) on the planet, not just with the play they inspire, but also with the materials we use. We still have a long 20 ) we are making." way to go on our journey, but are pleased with the Hillary Osborne, "Lego develops first bricks made from recycled plastic bottles", The Guardian, 23 June, 2021. (https://www.theguardian.com/lifeandstyle/2021/jun/23/lego- develops-first-bricks-made-of-recycled-plastic-bottles) (-)

gcdとは何ですか？？ また、どういう計算をして、＝でつながれているんですか？

と表せる. また、ユークリッドの互除法を用いると, gcd (6x+y, 3x+y) = gcd (3x+y, 3x) = gcd(3x, y) → 1.

この問題の(4)からわかりません。 教えて欲しいです！

右のグラフは,関数y=ax²+bx+c の グラフの概形である. このとき,次の各式 の符号を調べよ. (1) a (4) 62-4ac (6) 4a-26+c 演習問題 44 LDZ (2) 6 (3) c (5) a+b+c b L YA A -1 10 IC