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数学 高校生

すみません急いでいるのですが、(2)の領域が直線B‘A1から右上の領域(2枚目の斜線部分)だと思ったのですが、何故答えと違うのかわからないです。チャートも見ましたがよくわからなかったので教えて欲しいです ベクトル数学b

記号は上の通りとする. 図1より, 「s20, tは全実数」のときにPが動く領域は 図2のようになる (直線 OB の右側)ことがわかるだろう.同様に,「t20, sは全実数」のときは図3. AOAB に対して OP=sOA+t0B とする. 実数 s, tが次の条件を満たすとき,点Pが動く部分 5領域の表現 の面積をそれぞれ求めよ.ただし, △OABの面積をSとする。 ハs+t£1, 0s, 0St (明大·島) (2) 2Ss+4tS6, s20, tè0 (東海大·医/改園) s20が表す領域 図1 B 図2 図3 B B P S20 tOB t20 0 0 →A 'sOA A 0 A s+t=kが表す図形 まずん=1の場合 (OP=sOA+tOB, s+t=1) を考えよう.この場合は係 数の和が1だからPが描く図形は直線 AB となる (図 4). kキ0の場合は, OP=sOA + tOB, s+t=Dk から係数の和が1の形を作る. s+t=kの両辺をんで割って t とし、点と言が係数になるように S t k k k OF=-kOA+ k . kOB (kOA と kOB の係数の和が1)と変形する.すると, Pが描く図形は図5の k 直線 AB' (OA'=D&OA, OB'=kOB)になることがわかる. なお, A'B'//ABである。 図 4 B 図 5 B S+t=1 B' S+t=k kOB 0 A' A 0 -A kOA 0Ss+t<1が表す領域 0SkS1の範囲で動かせばよい, つまり, 図5のk (直線 A'B') を 0<k<1で動かせばよく, 右図の網目部 (境界含む) となる. k=0の 場合は, OF=sOA+(Is)OB=s(OA-OB)=sBA であるから, 0 を通り ABに平行な直線である。 OP=sOA+tOB, s+t=kのんを (A=1) A (k=0) : 答■

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英語 高校生

こういった問題を早く解けるようにするにはどうしたら良いでしょうか。 読み方のコツとかあれば教えてください😭

T) Read the following passage, and for each of the numbered spaces 【31】- 【35】, hoose the most suitable word from those given below (1-8). Use each number only one time. [67 皮本日 Retirement is the stage when a husband and wife finally have the chance to spend time together, free from the stresses and strains of working life. But far from being an era of relaxed contentment, retirement can actually be a stressful experience for couples. Academics have (【31】 ) that many wives actually begin to suffer from “retired husband syndrome” once their men give up work. They discovered that nearly half of women complained of ( 【32】 ) levels of stress, depression and sleeplessness after their husbands retired. And to make matters worse, Italian researchers also found that with every extra year the husband spent in retirement, the wife's condition became worse. They said that the problem does not only affect housewives, but can be even worse for women who are still (【33】 ) while their husbands stay at home. “We have found that retirement effects are stronger for employed women, who are already stressed by their job and have( 【34】 ) time to deal with the additional requests by their retired husbands," they said. Part of the cause of greater stress was that women were faced with an increase in housework, the authors wrote. They also had to deal with the added burden of reduced income, an extra concern' for both partners. The research was ( 【35】 ) out by social scientists Dr. Marco Bertoni and Dr. Giorgio Brunello, from the University of Padova, who analysed interviews with 840 Japanese Women between 2008 and 2013. 1. carried 2. increasing 3. less 4. much 5. reducing 6. reported 7. suitable 常 () 8. working 帰 副内王 蓄田

未解決 回答数: 1
英語 高校生

問4① 彼らは少ない時間でより生産的になる、というのが仕事に対して言っていると特定できるのは何故でしょうか、、、?? 本文で生産的になるのが仕事のことしか言っていないからでしょうか??

第3回 実戦問題 73 Vou are going to have a debate about men taking parental leave. In order to prepare for the debate, your group is reading the article below. According t0 a recent survey, about 5.14% of new fathers in Japan Love taken parental leave. Over the years, the number of men who take 18u0 narental leave has grown, but it is still a big challenge for men to take it in male-oriented-Japanese society. So, here is my question: Do you think more Japanese men should take parental leave or not? Taking parental leave has one great benefit. If men take it for even a couple of weeks after the baby arrives, it is a great help to their wives. Most families are now nuclear families, so it is more difficult for couples with a new child to get support from their parents. Husbands can provide not only physical support but also mental support to their wives. Since new mothers face many unexpected situations every day, they can feel a lot of stress. Getting help is the key to reducing it. Another benefit is that parental leave is usually refreshing for men, allowing them to work more efficiently after they return to their jobs. On the other hand, there are reasons men should not take it. (First, during parental leave, they get no salary. This can put a lot of pressure on family finances. Second, many people are still against men taking it, which places psychological pressure on the men who do. What do you think about this issue? Ibelieve that when men take parental leave, it helps them understand how hard caring for a baby is. Knowing more about the hard work of their wives surely strengthens their relationship. Furthermore, when men eagerly raise their children, Tamily bonds become stronger. Nobody could argue that such things should be not be encouraged. 第3回 don

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英語 高校生

答えが分からないので回答をお願いしたいです!

18。N*関係代名詞。 LE マと文をむすぶ接続詞のはたらさと、 開のはたらきを兼わz、 画係代名詞といいます。 文をむすふ同にとの関係代名詞を用いるを 先行詞 主 格 所有格 目的格 先行詞と格によって決まります。 Cbow 9d eb whose who(whom) 人 who which w 1o 物 which whose 人·物 that that 1 主格の関係代名詞 I have a friend who lives 2 所有格の関係代名詞 Sydney.(私にはシドニーに住んでいる友達がいます。) 3 目的格の関係代名詞 (彼女が私にくれた人形はとてもかわいい。) The doll that she gave me is very pretty. 0a0o gD 0DdDaD AロAロ J00 SCnoilaie oe0od wor 1 10 oy A 次の文の( )の中に適当な関係代名詞を入れなさい。 0 That is a bus goes to Yokohama Station. 2 He gave me the book( ) cover was yellow. ) played the part of Hamlet. Jodiw husband is dead is calleda widow. 3 He is an actor( ④ A woman( 5 This is the T-shirt )I bought in Hawaii. 6 There are many foreigners( ) speak Japanese well. 本日き文英の式 0 abiead ogeugmsl gienol 19dious 19teem of Tol v1s ad B 次の文を日本語に訳しなさい。 0 The lady that you met at the station is my English teacher. on 2sw ii gA 2 There are many children who don't like carrots. 1ert 2anb baT orr 2t il ¥9ura 3 Is that the boy you had a date with yesterday? の This is the song which is very popular among young people now. C 次の文を英語で書きなさい。 0 これは昨日兄がつかまえた魚です。 os nol woH 2 トムと話している少女はナオミです。 20 Primer

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英語 高校生

回答が分からないのでお願いします!

12。N 分 LE 詞。 1 形容詞の働き (1) Look at the sleeping baby. Look at the baby sleeping in the bed. (眠っている赤ちゃんをごらんなさい。) (ベッドで眠っている赤ちゃんをごらんなさい。) (これは彼女によって描かれた絵です。) 修飾語 (2) This is the picture painted by'her. 2 補語の働き (1) The white dog came running toward me. (その白い犬は私の方に走って来た。) S V C I saw a bear walking around in the woods. (私は森の中で熊が歩き回っているのを見た。) SV O C 4D A 次の(に)の中から適当なものを選び, ○で囲みなさい。 の The boy (sitting, to sit) in the front row is my brother. ) aicge 13m っ I found Tom(sleeping, to sleep) in his room. She received a letter (written, writing) in English. A lady (wearing, worn) a big hat is singing a song. 中の A 2 TUOY deinin 12um uo 3 gninub t) aisgs omo9 Do you know the man (to stand, standing) over there? 0) gbinda ai oodTO 5 lim (motoini) sbam ai olu She left the baby (to cry, crying) all night. (Barking, Barked) dogs don't always bite. 6 ミもるコ文で合文本日 8 B 次の日本文に合うように( これは盗まれた車ですか。 )内の語を並べかえなさい。J まt Joanut ort nt aud ofT (this / stolen /is/car/a)? 2 向こうで泣いている女の子はだれですか。 (crying / is/ there / the girl / who /over)? S L 円 ( ) 3で合 の文本日o C 次の文を日本語に訳しなさい。 の Is this the letter written by my father? C She sat readinga book. gctOL) There were a lot of birds singing in the trees. Laguoo Prim

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