学年

質問の種類

数学 高校生

⑶がわかりません。右の方の 『この式を省略し〜かまわないだろう』のところの h(x)=fインバース(x)と言い換えれる意味がわかりません。教えて欲しいです

6c0) 31次分数関数 4.r+2 とすると,g(f(x))=[(1)], f(g(r))=[(2)]となる 5r+1 図のよ 2.ェ+1 3.2+1'9(z)= 0 1-t: また,分数関数h(r)が, h(z)キーーとなるこに対して, f(h(z))=xを満たすとき, h(z)=[(3)]となる。 S(z)= であり の 7 (山梨大·医一後) ar+b (a~dは実数の定数)の形の関数を1次分数関数という。 1次分数関数とは 先 ( ) Cr+d 合成関数 9(け(z))は, gef(z)または (gef)(z)と書くことがある.g(f(z))とf(g(x))は一般に異なる関 数である(一致することもある).f (z), g(x)が1次分数関数のとき, g(f(z)), f(g(x))は1次分 数関数になる.(ここでは,便宜上, 1次関数なども1次分数関数に含めている) 逆関数について f1(z)とすると, f-1(f(x))=I, f(f-1(z))=ェである。 合成関数g(f(z))を求めるときは, g(z)のzをf(z)にしたものを計算すればよい。 1次分数関数の逆関数は1次分数関数になる.また,一般に,f(z)の逆関数を ■解答■ 答 2.r+1 +2 3.r+1 4 4(2.ェ+1)+2(3.ェ+1) 5(2ェ+1)+(3.r+1) 14x+6 2.ェ+1 5- 3.r+1 合この問題では,定義域は考えなく てよい。 13c+6 +1 4.ェ+2 2. 5ェ+1 +1 2(4.ェ+2)+(5.z+1) 3(4.ェ+2)+(5.r+1) 13x+5 (2) f(g(z))= ○(1)と(2)は異なる。 4.r+2 3- +1 5.ェ+1 17r+7 (3) f(z)の逆関数をf→(x)とする. f-'(f(h(z)))=f-!(z)より, コこの式を省略し,f(h(x))= だからん(z)=f-1(z) と書いて もかまわないだろう、 h(x)=f-1(z)である。 2.ェ+1 -=yとおいてェをyで表すと, 2.r+1=y(3z+1)より 3.z+1 トーム (3y-2)r=-y+1 ーリ+1 エ= 3y-2 1 1 3 より 3(3ェ-2) ーエ+1 [zとyを入れかえて] h(x)=- 3x-2 合h(z)キー (これが値域) 3 1 3 演習題(解答は p.41) エ-p -1<ェ<1を定義域とする関数f。(ェ)=- エ-9 f(x)= (-1<か<1, 1- px 1-qエ スくq<1)について, 次の問いに答えよ。 (0 定義域内のすべてのェに対して, -1<f。(z)<1を示せ。 1Oka ) SD エ-r 定義域内のすべてのェに対して, f(a(z))=_m を満たすとき,rをpとq 2 (1)f(z)+1>0と

解決済み 回答数: 1
英語 中学生

指が入っていてすいません🙇⤵︎ ︎ 英文です 答えは金曜日なのですがmotherの2番目の発言で「金曜日からお父さんは出張があります」と書かれています。 では金曜日ではないのでは…? と思います。 なぜこうなるのかを教えてください

(ア) ts Debbie 's grandfather's birthdav next week. Debbie and her mother want to "book a place at bo. grandjather's favorite restaurant. Thev are looking at the website of the restaurant. Mother: Can we book a table on Sunday? Debbie: We can't do that on Sunday because the restaurant will have a special event we can's go to. How about Saturday? They still have a table. Mother: Well, your father will be on a *business trip from Friday.I don't know when he con Come home on Saturday. Debbie: Isee. So we should book another day, but the restaurant doesn't open on Mondavs Mother: Iknow. I need to work on Tuesday night, so it is not a good day. Debbie : O.K. Some tables are "available on Wednesday and Thursday. Mother: Isee. Your uncle and aunt are going to join the dinner, too. New Debbie: Really? That willbe great. We will need a table for six people, right? Mother : That's right. Are there any big tables on Wednesday or Thursday? Debbie: Let me see A big table is available on Wednesday and Thursday. Which day do md you want to book? Mother: Well, Next Thursday is a holiday. If we book the night before, we don't need to think about next. day. Debbie: That's a good idea. Let's book that night. Mother: We'l go shopping this Saturday to buy grandfather's birthday present. Debbie: Great. Website White River Restaurant Please book your table, Day Tuesday Wednesday Thursday Friday Sunday Saturday 1 table for 6 Available 0 table for 6 1 table for 6 1 table for 6 0table for 6 Tables 6 tables for 4 7 tables. for4 3 tables for 4 2 tables for 4 SpeGie 5tables for 4 6 tables for 23 tables for2 (Week 3) 4 tables for 2 tables for 2 2 tables for 2 Event We don't open on Mondays. Open from Tuesday to Sunday 11:30 a.m. ~ ~ 21:00 p.m. 質問:Which day will Debbie and her family go to the restaurant? 1. On Tuesday. 2, On Wednesday. 3. On Thursday. 4. On Friday. 5、On Saturday.

解決済み 回答数: 1
英語 高校生

どなたか英語の得意な方この問題問いてくださいませんか、、 先日受験して不安で眠れません

6. 次の英文を読み, 以下の設問に答えよ。 legally as a *trophy. In 2003, a lone hunter killeda rhino on a legal safari in South Africa and brought it back to Asia. Dozens of poachers soon followed. The sound of rifles being fired could be heard in the dark forest just as each paying $50,000 for a hunt. It seems like a lot to pay, but poachers can Damien Mander arrived at his campfire after a long day training *game ranger make as much as $200,000 in profits by selling a pair of horns on *the black recruits in Zimbabwe's Nakavango *game reserve. "There, near the eastern market. boundary," he pointed. He and his rangers grabbed their guns, radios, and ull Many officials in Vietnam are fighting back against reports that the country medical kits. They then drove into the night, hoping to stop the shooter. is the main market for rhino horn, stating that rhino horn bound for Vietnam (21) And so goes a night on the front lines of southern Africa's ruthless * rhino is merely in transit for another country. Do Quang Tung, deputy director of war, which has seen more than a thousand rhinos killed since 2006. At the CITES Managing Authority in Vietnam, said the country "could not be the main bloody heart of this conflict is the rhino's horn, a prized ingredient in traditional market for South African rhino horn," claiming that the majority of Vietnamese Asian medicine. Prices range from $33 to $133 a gram, which at the top end is people would not be able to ( 26 ) rhino horn. Even if there is an emerging double the price of gold. group of people who can ( 26 ) it, he thinks it is too small to make the country Although the range of the two African species 一 the white rhino and its a significant consumer. Professor Dang Huy Huynh, chairman of the Vietnam smaller cousin, the black rhino- has been reduced primarily to southern Africa Zoological Society, says that rhino horn has never been a popular ingredient in and Kenya, their populations had shown signs of improvement. In 2007 white traditional medicine. rhinos numbered 17,470, while blacks had nearly doubled to 4,230 since the mid Recently, there has been a renewed interest in the unproven belief that rhino 90s. horn has healing power. For at least 2,000 years, Asian medicine has prescribed For conservationists these numbers represented a triumph. In the 1970s rhino horn to reduce fever and treat a range of illnesses, but the handful of 22 and '80s, *poaching had nearly caused the two species to become extinct. Ther studies which have been conducted on rhino horn have not found any proof that China banned rhino horn from traditional medicine, and Yemen forbade its ust it can reduce fever. The newest rumor is that it cures cancer, but doctors say in ceremonial knife handles. All signs pointed to better days. But in 2008 th the proof is nonexistent一 no research has been published on the horn's efficacy 23) number of poached rhinos in South Africa shot up to 83, from just 13 in 200' as a cancer treatment. But even if rhino horn is not an effective cure for anything, let alone cancer, that doesn't mean it has no effect, says Mary Hardy. By 2010 the figure had soared to 333, followed by over 400 in 2011. Most of th 27) medical director of Simms/Mann UCLA Center for Integrative Oncology. "Belief horn trade was found to lead to Southeast Asia. in a treatment, especially one that is wildly expensive and hard to get, can have *Javan rhinos once lived in Vietnam's forests. ( 24 ) It had a bullet a powerful effect on how a patient feels," she says. its leg and its horn had been removed. In any event, John Hume believes no rhinos need to die to supply the rhino Even with the rhinos gone, rhino horn can still be found in Vietnam. This 28 25 horn to those who want it. The 69-year-old * entrepreneur has acquired one of because South African law, which complies with the Convention on Internatio the largest privately-owned rhino herds in the world, and currently has more Trade in Endangered Species (CITES), allowS a rhino's horn to be expor ○M3(45)

解決済み 回答数: 1
英語 高校生

【英表】不定詞 分かるところだけでいいので教えて欲しいです🙏 お願いします✨

A日本文の意味に合うように, ( )内に適語を入れなさい。 いつ会議を開くか決まりましたか。 (→ロ. 2. 5 Have you decided ( 体重を落とすために父は会社まで歩いて行きます。 <pniob〉同 ) have the meeting? My father walks to his office in ( ) lose weight. 2)かぜをひかないように彼女はマスクをつけた。 She put on a mask so ( )姉はピアノは言うまでもなく, パイプオルガンも弾ける。 My sister can play the pipe organ, to( ) to catch a cold. ) of the piano. 5)彼はいわば日本のピカソだ. He is, so( ), a Japanese Picasso. 2次の各組の文がほぼ同じ意味になるように,( )内に適語を入れなさい。 |4 The camera is so expensive that I cannot buy it. 1) The camera is ( ) expensive( ) buy. We ran fast enough to catch the bus. 2) We ran ( ) that we( ) catch the bus. Jim was so kind as to carry my suitcase. 3) Jim was ) to carry my suitcase. 3次の各文を日本語に直しなさい。 1) The President is to visit Tokyo in October. 2) You are to be very careful when you cross the street. 3) Not a cloud was to be seen in the sky. 4日本文の意味に合うように, ( )内の語句を並べかえなさい。 1) リカは弁護士になるために, 一生懸命に勉強しています。 (to, a lawyer, order, be, in) Rika is studying hard 2) サムは新しいビジネスを始めた.友人たちはそうしないように言ったのだが、 (told, not, his friends, him, to) Sam started a new business, though Ma eun s nsd yimdo To buong emao 次の日本文を英語に直しなさい。 1)私はとても忙しくて野球の試合を見に行けません see the baseball game. I'm 2)まず第一に,その機械の使い方がわからないのです。 I don't know the machine. 3) マキは子どもにもわかるくらいゆっくり話した。 Maki spoke

解決済み 回答数: 1