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Mathematics Senior High

(3) x,yをzを用いて表す、というところで、x=z、y=-zになるのがなぜかわかりません。①②の式からどのような変形をして、x,yをそれぞれzを用いて表すのですか?

対して ka +tb>1 が成り立つような実数kの値の範囲を求めよ。 【18 甲南大] 留内積の計算 数式と同じようにできる。 なお |f=da 1soo|2|||=2:1盟 3√3 2 |k+t6|>1 の両辺はともに正であるから,k+16>12 である。 ①から ka+2kta 6+t|b|²>1² ①と同値 よって f2+3√3kt+9k-1>0 2 ②がすべての実数について成り立つための必要十分条件は,tの2次方程式 f2+3√3kt+9k-1=0 の判別式をDとすると ここで D=(3√3k)2-4(9k2-1)=-9k²+4 D<0 L ベクト 求めると、 347 241 ならば、 2 2 D<0 から k<- <k 答 3'3 ■Check■■ 47 (1)2つのベクトル d = (1, 2), = (k, 4) に対して, a 2-a が 平行であるとき,kの値を求めよ。 また, 3d-b と a+ò が垂直であるとき, kの値を求めよ。 (2) ベクトル, が |a+6=11, |-6|=7 を満たすとき, 内積を求 めよ。 (3)空間の2つのベクトル a = (2,3, 1) = (1,2,3)の両方に垂直で大 きさが1のベクトルを求めよ。 348 1 積 OA ように (1) *349 周」 よ *344 (1)||=5,|6|=3,|a-26|=7 を満たすとする。このとき, 内積を求めよ。また, tが実数全体を動くとき, a +坊の最小値と, [類 15 関西学院大 ] そのときのtの値を求めよ。 (2)ベクトル,,こが+6+2=0,|4|=|6|=||=2を満たすとき,内積 の値と,とものなす角を求めよ。 98 ■ XI ベクトル [17 東京都市大] 350 る

Resolved Answers: 1
English Senior High

空欄の所が全然分からないです また、埋まっているところもあっているか確認してもらいたいです🙇🏻‍♀️՞ 出来れば明日の朝までにお願いします

<確認しよう> Lesson 2: Let's Have a Healthy Workout *意味が区切れる箇所で「/」 を入れ、文が終わる箇所では、「/」 を入れています。 1 の英文 a wide range of people (range: 範囲、 領域、 幅 幅広い層の人々 3 の英文 Some of them の them は何を指す? many people S V 1 DIn Japan / strength training was not so popular before, but now it is enjoyed / C 5 4 の英文 why はもちろん何? 関係副詞 S by a wide range of people. // ②Many people have begun training their muscles / for health and 0 beauty.// ③Some of them are posting photos and videos of their training / on social media.// 0 2 ④A reason why strength training has become popularis/ that its medical benefits have S ✓ これは文法で何と呼ばれますか。 Without muscles を書き換えると ★日本語訳をきちんとノートに書いておこう! 8 の英文 play はどういう意味? (ヒント:play a role ) この質問に対する答えを3つ挙げてください。 10 の英文 Without muscles, you could not walk/ or even stand. S become clear. ⑤ Since the 1990s, / research on muscles has revealed/ that moderate strength S V S training promotes health// ⑥After the age of 30, / people's muscles become 3 to 8 percent S 14 の英文 S S smaller / every decade.// ⑦Strength training can address this problem.// c 3 ⑧What role do muscles play / in your body? // ⑨First,/ muscles move your body. // ⑩0 munches play 0 S V 0 Moreover, / muscles move your S V Without muscles/ you could not walk / or even stand. // S V② heart and stomach/ without your conscious control // In addition,/ muscles help to create 0 S V.00 heat/ and maintain body temperature. // About 60 percent of the heat // your body produces ②⑥用法 ✓副用法 / comes from muscles. V Be careful not to exercise too much. 下線部を訳せる?→ノートに書いておこうか 運動しないこと V 0 15 の英文 It is said that 節 訳せる? 17 の英文 分詞構文と捉えていいかもしれません。 When doing strength training, When when と doing の間に何が省略されていますか。 doing_ →仮主語 both A and B の意味は AとBの両方 4 14 Be careful not to exercise too much.// 15it is said that too much exercise will weaken vCe 専門的 research h muscles your immune system. doing strength training, S ⑩6 You may easily catch a cold/ just after hard training. /// When S about you need to consider / both the quantity and the quality of your ~について ~に関して onのほうがaboutよりも専門的 B. 用法 分詞構文はその表す意味があいまいなことが多いので、はっきりさせるために分詞の 前に接続詞をつけることがあります。 接続詞 exercise.//

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TOEIC・English Undergraduate

青くしてある文の文構造と訳し方を教えていただきたいです🙇‍♀️ また、mainstream America の語順に違和感を感じていて、(American mainstream とした方が正しくない?と思ってしまいます、、)それも解説いただきたいです。

Neil Hello. This is 6 Minute English from BBC Learning English. I'm Neil. Georgie And I'm Georgie. Neil If I told you I'd been for a walk to see Big Ben and Buckingham Palace, you'd know straight away I was in London. Georgie But what if my walk went past cafes selling mozzarella and ricotta where I smelled freshly made cannolis and focaccia... Where would I be then? Neil Focaccia and mozzarella... you'd be in Italy, right? Georgie Yes, Italy, or 'Little Italy' to be exact - the neighbourhood in some cities where Italian communities settled and made their home. Neil These Italian arrivals opened shops and cafes selling food to their own communities. Soon dishes like spaghetti and meatballs attracted the attention of local people, and gradually Italian food became famous around the world. In this programme, we'll be taking a walk through two Little Italys, one in Argentina, the other in New York, and, as usual, we'll be learning some useful new vocabulary as well. But before that, I have a question for you, Georgie. According to a recent YouGov poll, which Italian food is most popular with British diners? Is it: a) pizza? b) lasagne? or c) garlic bread? Georgie I think it must be pizza. Neil Okay, Georgie, I'll reveal the answer at the end of the programme. One country Italians moved to was Argentina. In 1898, Giuseppe Banchero arrived in the neighbourhood of La Boca, the Little Italy of Buenos Aires, where many Italian immigrants started restaurants. Here, Hugo Banchero, grandson of Giuseppe, tells his story to Veronica Smink, reporter for BBC World Service programme, The Food Chain: Hugo Banchero Well, my grandfather came from Italy, from Genoa, from Liguria. He was born in the centre of Genoa and arrived here in 1898 at the age of seven and a half, and this pizzeria where we are was founded on March 28, 1972. We have been here for 91 years. Veronica Smink So what culinary traditions did they bring with them? Hugo Banchero Well, our culinary tradition is pizza, and we incorporated the faina from Genoa, which is a pizza with chickpea flour... Georgie In 1898, Giuseppe founded his pizzeria - a restaurant selling pizza. When a business is founded, it's established someone starts it, or sets it up. Neil Giuseppe brought the culinary traditions from his home in Liguria in northern Italy, including regional pizzas like faina and fugazzetta. The adjective culinary describes anything connected with cooking. Georgie But probably the best-known Little Italy in the world is an area of Manhattan's Lower East side in New York. Ninety percent of Italian immigrants who arrived in the US at the turn of the century came through this neighbourhood. Neil De Palos, one of the original shops selling Italian food in Little Italy, has been serving customers for 113 years. Here, Lou De Palo, co-owner and great-grandson of the original owner, Salvino, explains more about his family history to BBC World Service programme, The Food Chain: Lou De Palo 1925... when my grandmother, Concetta, and my grandfather, Luigi, got married, they open their own shop... it's the shop we continue today being the fourth generation working alongside my sister, Maria, my brother, Sal, and our children, the fifth generation. Our business has expanded; expanded to present the full food culture of the 20 regions of Italy. Little Italy is the stepping stone of the Italian immigrant. This is where many of the Italians first came through Ellis Island, and then settled here, and then eventually moved into mainstream America throughout the rest of the country. Georgie Lou De Palo is the fourth generation of his family to run the shop, and his children will be the fifth. Phrases like fourth or fifth generation describe the children of people whose parents immigrated to a particular country.

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Mathematics Senior High

この問題の数列bnが等比数列となるための条件はの後の式が分かりません。どうして②の条件が 等比数列になるための条件なんですか?

0000 要 例題 47 分数形の漸化式 (2) 数列{an} が α1=4, an+1= 4an+8 an+6 で定められている。 16m= an-a an- とおく。 このとき, 数列 {bm} が等比数列となるようなα B (α>β) の値を求めよ。 (2) 数列{an} の一般項を求めよ。 本間も分数形の漸化式であるが, 誘導があるので,それに従って進めよう (1) bn+1= an+1-B an+1-a に与えられた漸化式を代入するとよい。 (2)(1)から,等比数列の問題に帰着される。 まず, 一般項6 を求める。 重要 46 485 1 出 章 ⑤種々の漸化式 ついて と変形できる 基本37 問題37 のように おき換えを利用 4an +8 辺のαを右辺 通分する。 0から。 答 (1) bn+1 an+1-B ・B an+6 = = an+1-a 4an+8 (4-β)an+8-6β a an+6 (4-a)an+8-6a_ (繁分数式) の扱い 分母, 分子に an+6を掛 8-6β an+ ( 4-B 4-B S = 4-a 8-6a ① ant 4-a けて整理する。 の分母を4-α 分 子を4-βでくくる。 ために, 数列 {bm} が等比数列となるための条件は )を断る。 から 8-6β 4-β =- -β, 8-6a 4-a D == a ② |_ ε bn = an-a an-β の右 島着。 よって,α,βは2次方程式8-6x=-x(4-x) の解であ り x2+2x-8=0を解いて x=2, -4 辺の分母分子をそれぞ れ比較。 (x-2)(x+4)=0 a>βから α=2, β=-4 (2) 4-β_ 4+4 4+4 - =4と ① ② から b+1=46 8-6β -=-β=4, 4-a 4-2 4-B 8-6α また b1= a+4 a1-2 =4 ゆえに b=44"-1=4" =-a=-2, 4-a 特性方 よって an+4 an-2 =4n ゆえに an= bn= 2(4"+2) 4"-1 an+4 an-2 (10+0 D-D D-T

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