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数学 高校生

左下のほうの?の部分について詳しく教えてください。 何故b0やa0が出てくるのですか?

11 数列と極限の応用,対数関数の応用 1-1. 3項間の漸化式とその応用 1-1-1. 白銀比 白銀比は,古くから日本建築などで多く使われてきた比である。。 またA判, B判の用紙の2辺の長さの比も自銀比である。 例題1 例えば, A3 版の用紙の長辺を半分に折ると A4版になる。 A3版の2辺の長さの比は, A4版のそれと等しく, 相似である。 一般的に, n20において, An版の用紙の長辺を半分に折ると An+1 版になる。 An版の2辺の長さの比は, An+1版のそれと等しく, 相似である。 A0版の用紙の面積は1㎡である。 このとき, An版の用紙の長辺の長さをanmm, 短辺の長さをan+1 (mm)と定義できる。 (1) a,の一般項を求めなさい。 hs 解容 An版の用紙の長辺を半分に折ると An+1 版になるので an an+z = |Al 2 …の w An版の2辺の長さの比は, An+1 版のそれと等しいので, an:0n+1 = an+1:On+2 03 Qn の 0のより O On-(20nc) As = 03 Aats = an +1 Oル イ入して、 20 Anre 2-0:Ontl Om: 0ne [am 2 2 2 = bとおくと Anel: 2 11 数列と極限の応用, 対数関数の応用 br bn+1 等比数列の公式より baibl4) an= aur"! Aの0乗は1 b, = bo() よって A0版 an = ao a0.| Im? = ag A0版の用紙の大きさが1㎡なので, aga = 1000× 1000 =D 106 1 aga = aga,ー= 100 = 10%2) 10°同 o = 1032 以上より Cn = 10002 (n20) 補足 V2 = 1.414, V2 = 1.189 とすると, 10002 = 297 4 a4 = 1000V2 1000VZE = 210 5 as = 1000VZ( 8 1 る-レがわかる

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英語 高校生

○を付けている問題を教えてください!(5)は解答の和訳もおしえていただきたいです。

1Comprehension Check! Choose the best option. LESSON 100 11文型 (4点) What is the theme of the conversation? ssa dso isds 02nold (ase ni lin 計 a. The History of the Fourth of July b. What Americans Eat on the Fourth of July r nT c. How Americans Celebrate the Fourth of July 2-4米 カ d. The Fourth of July and Fireworks 40 R eading duod QHints 2|Questions Answer the following questions. Read the passage and answer the questions. the 4th of July 7月4日(アメリカ独立記念日) : How do Americans celebrate the 4th of July, Ms. Smith? の Haruto ; Ms. Smith: Well, it's a special day for Americans /and they have [1] 下線部Oの語句を正しく並べベかえなさい。ただし,先頭の語は大文字に直すこと。 (5点) 2oh atfT different ideas about how_tol celebrate it.] :のL you / some / me / can / examples / give ] of how they celebrate it? IT of how they celebrate it? Haruto [2) 下線部ののthatの内容を日本語で説明しなさい。 dapos odt to hi ne IdegW moso (6点) monidas oo) Ms. Smith: Well, most people like to have a big party with their family and friends. ;Really? Do you mean they[ wear nice clothes and 肉はどこで調理されますか。日本語で答えなさい。 M bus ojov ogid loodse oT (6点) れ Haruto serve tea and cakes? kthar) p Ms. Smith: No, it's mot like ②that at all} :What do yolrmean? 全<~ない 1 の M bun oo o1 gtd loodoa me n6qs[ orit su9 (6点) Haruto 下線部3をItの内容を明らかにして日本語に直しなさい。 Ms. Smith: First, everyone (who comes to the party will bring food. Haruto ;Really? What kinds of food? aidal corn [ks:rm) コーン,トウモロコシ bean [bi:n] 豆 home-made 自家製の Ms. Smith: They will bring many kinds of food like salads, corn. beans, potatoes, fresh breads, home-made cakes and cookies. And everyone will bring drinks like cola, juice, and so on. ;Is that all they eat? |5 Why does every family buy a lot of fireworks for the 4th of July? Answer in English. (7点) 15 の Haruto 3 Ms. Smith:No, there will be lots of meat cooked on a BBQ grill BBQ パーベキュー 3| Listening Quiz Listen to the recording and put T (True) or F (False) in the brackets. in the garden. gril (gril] グリル、焼き調 4 3) Haruto :What kinds of meat? (各2点) へ へ Ms. Smith: Well, my family always has a lot of steak, chicken, and pork. We cook the pork and chicken for six or seven hours over a very small fire. ③ It makes the dir6 sead o oo 9pnysLA s meat very ténder. tender [tendar] 柔らかい もッ :Do Americans only eat and drink on the 4th of July? Ms. Smith: No, when it gets dark people usually set off fireworks. Haruto onl obiT (1) olaalms a get dark くなる set off ~/set~ off (花火など)を打ち上げる They are reasonable in America so every family buys a lot and then sets them off for the children. :Wow! It sounds like a lot of fun! (3B Your Idea how su ai Haruto (226 words) =本書では、アメリ発音、 イギリス発音、オーストラリア発音、カナダ発音の音声を扱って います。Reading のCDトラック番号の横にそれぞれを米関、力で示しています。 ubostal a If you are invited to the party, what food will you bring? 5

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英語 高校生

画像の印の着いた問題の解答が間違えていないか教えてください!

CTIMU 9 Im sorry, but ( マ ). When he comes back, Ill tell him to call you. ア the president has gone somewhere イ we are out now ウthe principal came back here a few minutes. ago PIl tell my secretary to take a business trip 6 I hear that( イ )next spring. ア Mariko started to live in Okinawa イ Haruna is going to move to Nara ゥ Yukiko traveled in Saga エHHitoe has come back to Chiba 3 次の日本語の意味に合う英文として,最も適当なものを1つ選び,記号で答えなさい。 0私の父は毎週土曜日になると、リビングでビールを飲んでいます。( イ ) ア My father has drunk beer in the living room every Saturday. イ My father drinks beer in the living room every Saturday. ウ My father is drinking beer in the living room every Saturday. エ My father drank beer in the living room every Saturday. 2 2私は子どもの頃, ニューヨークに3年間住んでいたことがあります。(イ) ア When I was a child, I was living in New York for 3 years. イI have lived in New York for three years when I was a child. ウI lived in New York for three years in my childhood. エ As a child, I was going to live in New York for three years. 週末は何をするのですか」 「特に何も予定はありません。ゆっくりします。」( マ) ア“What do you do next weekend?” “Nothing special. I'm going to take it easy.” イ“What are you going to do next weekend?” “Nothing special. Ill take it () easy” ゥ“What did you do next weekend?” “Nothing special. I take it easy.” エ“What will you do next weekend?”“Nothing special. I have taken it easy," の高校時代はこのグラウンドでよく野球をしていました。 (エ) アI was often playing baseball at this ground when I was a high school student. ィIhave often played baseball at this ground in my high school days. ウ As a high school student, I often play baseball at this ground. ェ When I was a high school student, I often played baseball at this ground. 31 文法編 長文編

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