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Mathematics Senior High

2番の記述は解答では 1≦x<2のとき... 2≦x≦3のとき... となっていますが 1≦x≦2のとき... 2<x≦3のとき... でもいいですよね??

114 重要 例題 68 定義域によって式が異なる関数 (2) 関数f(x) (0≦x≦4) を右のように定義すると き,次の関数のグラフをかけ。 (1) y=f(x) (2) y=f(f(x)) 解答 (1) グラフは図 (1)。 (2f(x) (2) f(f(x))= よって, (1) のグラフから 0≦x<1のとき 1≦x<2のとき 指針▷定義域によって式が変わる関数では, 変わる境目のx,yの値に着目。 (2) f(f(x)) はf(x)のxにf(x) を代入した式で, 0≦f(x)<2のとき 2f(x), 2≦f(x)≦4のとき 8-2f(x) (1) のグラフにおいて, f(x) <2となるxの範囲と, 2≦f(x) ≦4となるxの範囲を見 極めて場合分けをする。 YA 2≦x≦3のとき 3<x≦4のとき よって, グラフは図 (2) 。 (1) 4 (0 ≤ f(x) <2) [8-2f(x) (2≤ f(x) ≤4) 2 0 f(f(x))=2f(x)=2・2x=4x f(f(x))=8-2f(x)=8-2・2x=8-4x I 1 i I I I I 「 1 2 3 4 x f(f(x))=8-2f(x)=8-2(8-2x)=4x-8 f(f(x))=2f(x)=2(8-2x)=16-4x (2) YA 4 M 練習 4 68 次の関数のグラフをかけ。 (1) y=f(r) 12 3 4 x f(x)= 参考 (2)のグラフは,式の意味を考える方法でかくこともできる。 [1] f(x) が2未満なら2倍する。 [2] ∫(x) が2以上 4以下なら、8から2倍を引く。 JAMENT 2x [右図で,黒の太線・細線部分が y=f(x), 赤の実線部分が y=f(f(x)) のグラフである。] なお, f(f(x)) f(x) f(x) の 合成関数といい, (fof) (x) と書く (詳しくは数学Ⅲで学ぶ)。 関数 f(x) (0≦x<1) を右のように定義するとき { 00000 (0≦x<2) 8-2x(2≦x≦4) Work 変域ごとにグラフをかく。 (1) のグラフから、f(x)の 0≦x<1のとき 0≦f(x)<2 1≦x≦3のとき 2≦f(x)\4 3<x≦4のとき 0≦f(x)<2 また, 1≦x≦3のとき、 f(x) の式は 1≦x<2ならf(x)=2x 2≦x≦3 なら f(x)=8-3 のように、2を境にして が異なるため (2) は左の 答のような合計4通りの 合分けが必要になってくる 23 y 4 2 0 (2x 8から2倍 2倍する (Osr< 方 J は a- <平 平 す <27 した

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English Senior High

英検準1級のライティングが毎回悪いです。 1回目 内容 3/4 、構成 1/4 、語い 3/4 、文法2/4 2回目 内容 1/4、構成1/4、語い3/4、文法3/4 こんな感じで毎回ライティングの点数が1番低いです。 2回で共通しているのは、構成が... Read More

Will Societies fature? with low birthrites face. Prents: Workforce, Foodshortige, Technological Innovation, Environment problem. I disagree with the idea. I have two reasons to my opinion. to get on important to First of all, it doesn't cause a foodshortage If the number of people increased, Some people who Live ChrA Parthe popularity decreased, it with bat country can't get the food enough. if food. That is Cause food problem. a Crisis in the not cause Płoblem Second of all,. it doesn't cause an environmental problem. These days, many trash is in ocean and on the ground. This kind of problem is Caused by the people decreased, the number of trash will inclined. foo Support In conducian, I think that low birth raten twon't food shortage and an enviroment a Is marraige becoming less important today than it was in the past ?! I agree with the idea. I have two reasons to support my opinion... university. ability of their studying, their much First of all, having children cost much money. It goes saying Therefore, to support their that these days many students parents must pay money. Secord of all, some women wants to live alone. (Vowadays, the number of women is who is working increasing. As a result, they can have enough money to live by themself so they don't think it is necessary to marry. increasing is is becoming less important. In conclusion, I think that their money problem and the number of people who want to be independent the problem that the marraige is

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English Senior High

下の問題を教えてください。m(*_ _)m

各文の( 内の語のうち,より適当なほうを選びなさい. (1) The ground was covered with (falling, fallen) leaves. (2) He is a famous pianist (knowing, known) all over the world. (3) Ann looked (exciting, excited) about going to the opera. (4) Phil kept me (waiting, waited) for half an hour. (5) They watched the firefighter (climbing, climbed) the ladder. (6) (Leaving, Left) alone, the little boy began to cry. (7) I had my bag (carrying, carried) to my room. 2 日本文の意味に合うように( (1) 私たちは先週の土曜日東京に買い物に行った. We( ) ( (2) ネズミはネコを見ると全速力で逃げた. に適当な語を入れなさい . ) Tokyo last Saturday. ) a cat, the mouse ran away at full speed. (3) 私は顔が赤くなっていると感じた. I felt my face ( ) red. (4) リスクを考慮に入れると, その計画は延期するべきだ . ) the risk into consideration, we should put the plan off. (5) トニーは自分の名前が黒板に書かれているのを見つけた . Tony( ) his name ( (6) 彼女は部屋の外で立ったままだった. She( ) on the blackboard. ) ( very impressed. ) outside the room. 3 各組の文がほぼ同じ意味になるように( )に適当な語を入れなさい . (1) She took off her hat, and bowed to me. ) ( ) her hat, she bowed to me. (2) Since I didn't know what to do, I looked around. ) ( ) what to do, I looked around. (3) After I had finished my homework, I went to the movies. ) my homework, I went to the movies. 1 (1) (2) (3) (4) (5) (6) (7) (4) As it was Sunday, most shops were closed. ) ( ) Sunday, most shops were closed. (5) As I had not heard such a beautiful melody, I was very impressed. ( ) heard such a beautiful melody, I was (1 (2 (3

Solved Answers: 1
English Senior High

この問題の答えと解き方をお願いします!

[文法 BC Grammar & Vocabulary 文法・語い Theme 形容詞・副詞の語法 語いD] B 日本文の意味に合うように、( )に適語を入れなさい。 (1) 一般的に,銀の価格は金の価格よりも安い。 In general, the price of silver is ( (2) かなりの数のアメリカ人が和食を食べるのを楽しんでいる。 Quite a ( (3) 早くも3月には桜が咲き始めた。 ) Americans enjoy eating Japanese food. UNT 14 ) than that of gold. The cherry blossoms began to bloom as ( (4) 彼は一生懸命取り組めば多くのことを成しとげる能力がある。 He is ( ) of accomplishing many things if he works hard. (5) 霧のために,私たちには前方の道がほとんど見えなかった。 Because of the fog, we could ( ) see the road ahead of us. C 日本文の意味に合うように, (1) 棚にあるDVD の3分の1はビリーのものだ。 ( the shelf / third / the DVDs / of / on / one) are Billy's. 内の語(句) を並べかえなさい。 ) as March. (4) これは私が買いたかった, まさにその本です。 This (book / the / is / I / wanted / that / buy / very / to ). ⑥ familiar (2) Having worked here for two years, ⓒ guilty of b aware of 127 /10 (各3点) (2) 電車に乗り遅れないように6時きっかりに来ることを忘れないでください。 Don't forget to come at (the train / sharp / that / don't / we / six o'clock / miss / so ). (3) エレンは,ロイから受け取った手紙をほとんどすべて燃やした。 Ellen burned (from / all / received / the / Roy / she / letters / almost ). 獨協大学 @abrupt (各3点) D に入る適切な語(句)を下から選び,記号で答え, 下線部を和訳しなさい。 (各5点) (1) Jane was very hungry, so she ordered an extra large pizza for lunch. When it arrived, it was ( ). She could only eat half of it. ⓒ offensive @enormous 〈立正大学 〉 Harry has become ( ) the work. ⓒ accustomed to ⓓ relevant to Expr E

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