?の部分でなぜsin^2になるのですか、？

x>1におい よって、 1<a<c<bのとき f'(a)<fle ゆえに -=f'(c)(b-a) log b log a [I 31-e³ すな "dz=n 薬 23定積分 Example 23 ***** 自然数nに対し, In = cosxdx とするとき, 次の問いに答えよ。 (1)とそれぞれ求めよ。 (2) 自然数nに対し, In+2 を In で表せ。 (3) Ig で表せ。 [21 岩手大] ★★★★★ 119 次の定積 (1) S sin' (3) Soext- (5)Sill0g ME (1) = "" cosxdx-sinx=1 (1+cos2x)dx 1- cos'x dx=(1+cos =1/2x+1/12/sin2x=4 (2) In+2=2COS+2xdx=2(sinx)' cos”+1xdx [★★★★☆] 120α, B は となるの 121 (1) m (2)不定 (3) n Key 部分積分法によ ★★☆★☆★ =sinxcos**x] +(n+1) sin®x cosxdx り, In+2 を計算すると In, In+2 が現れる。 I =(n+1)(1-cos x) cos"x dx =(n+1)(In-In+2) よって したがって (n+2)In+2=(n+1)In In+2=n+1In (3)(2)の結果を用いると n+21 75 18=- = 86 256 よって π= 35 Key (2) の結果を繰り が成 (4)定 35 返し用いる。 -π 753 7.53 12= 864 8 6 4 4 256 Practice 23 ★★★☆☆ n=0, 1, 2, ...... に対し, In=Sxelaxdx とする。 (1)の値を求めよ。 (2)n≧1 のとき, In と In-1 の間に成り立つ関係式を求めよ。 (3) I3 の値を求めよ。 (4) JEB) *(sinxco (4)定積分 (sinxcosx) e3sinxdxの値を求めよ。 48 ++ VI ★☆★☆★ 122 ★★★☆☆ S 123 f (1) [類 19 摂南大〕

高校受験を控える弟の英語のテストなのですが、回答がなくて、どなたか回答案をくださりませんか？

7 次の(1),(2)の英文を読んで、それぞれの問いに答えなさい。 (1) ユタカ (Yutaka) とジョージ (George)は, 2人の住むみつば市 (Mitsuba City) について調査し,英語でプレ ゼンテーション(presentation)を行いました。 ユタカがスライド(slide)を使って発表をしています。 Hello, I'm Yutaka. I live in Mitsuba City and have lived there since I was born. There are some big parks in the city, and I often played in them with my friends when I was a child. I like my city very much. people than before. Look at Slide 1. Last month, I saw news about Mitsuba City on TV. It said that our city had fewer This shows the number of people in Mitsuba City. There were more than 300,000 people in 2000. The number became larger until 2010, but after that, it started to decrease. In 2020, about 280,000 people lived there. Why did the number of people become small? To find out the reasons, I read some books and checked some websites on the Internet. I got some ideas. Look at Slide 2. This shows the number of people in Wakaba City and Aoba City. These cities are next to Mitsuba City. You can see that these two cities had more people in 2020 than in 2000. In fact, Wakaba City started some plans to help parents in 2014. For example, parents don't have to pay money when they take their sick children to the hospital. This means parents can take care of their sick children ( A ) worrying about money. In Aoba City, a new train station was built in 2008. Since then, the city has more convenience stores, clothes shops, and restaurants. Living in Aoba City became more convenient, so more people started to live there. Look at Slide 3. You can see the number of each type of shop was larger in 2020 than in 2000. Now, Aoba City has become one of the most popular cities among people. Mitsuba City is a good city, but I don't think it has many attractive points. Parents still have to pay a lot of money to take care of their sick children. Also, there are not many shops and restaurants in the city. I think Mitsuba City should have more attractive points like Wakaba City and Aoba City. I want more people to live in Mitsuba City in the future. Slide 2 Slide 3 (people) 180,000 Covenience Stores 170,000 160,000 Clothes Shops 150,000 Restaurants 140,000 2000 2005 Wakaba 2010 2015 2020 --- Aoba (year) 0 10 20 30 40 50 (number) ■ 2000 m 2020 (注) be born 生まれる play 遊ぶ decrease 減少する in fact 実際は attractive 魅力的な find out take care of ~ news ニュース ~を探り出す ~ 〜の世話をする fewer より少ない website ウェブサイト convenient 便利な point -5-

こんばんは英作文の添削をお願いします！ たくさんの人の意見が欲しいです！ 1、2枚目が下書きでこの文章と点数です 最初で満点をとりたいのでchat GPTを交えて文を書き直しました。不自然な文があったら教えてください！ 明日の午後提出です！

I'm going to talk about an experience that changed my life Was when I studied studying abroad in Niseko, Hokkaido. I stayed for a total of 2 months last summer I made a lot of friends. and this summer. Speaking in both Japanese and English deepened our bond. Even after studying abroad we l are still in touch. We are going to have a reunion in Tokyo on Christmas Actually, I hadn't been good at English before I studied abroad. A friend of mine said "Don't be afraid ". Then to me •get rid of my weakness in English. I had a conversation with my I was able to native teacher in English through the activitities. In these activities, had a We did BBQ, cooked, and went sightseeing. It was d again, I would like to go skiing. lot of fun. If I could study abroad in Niseko to Niseko. You can enjoy Niseko's lifestyle Please yo m

You introduced us to some examples of Australian prehistoric paintings. ここに to がなぜ入っているのか教えてほしいです

英検2級の英作文の採点をしてもらいたいです。 書き方は自分のなかで整理するためにそうしているだけなので、本番ではちゃんと書きますのでお気になさらないでください。 あと6日で試験です。誰かお願いします。 また、英検を受ける際にこれだけは頭に入れておけ！みたいなことがありました... 続きを読む

18 日目 筆記 5 TOPIC These days, some young people continue living with their parents even after they become adults. Do you think that the number of such people will increase in the future? POINTS ● Career ● Cost 節約できる →だから他の事に使える ●Family 自分の金を →家と一緒に いれる →たとえば災害おきた ときとか安心。

有機の問題です。(5)はどうしてケトンになるのでしょうか。CH3とC2H5を合わせてケトンというのですか？

(1) C2H5OH (2) CH3COOH (3) CH3OCH3 例題 39 官能基による分類 example problem 次の有機化合物中に含まれる官能基の名称、およびその官能基を有する物質の一般名を答えよ。 (4) CH3COOC2H5 (5) CH3COC2H5 解答 (1) ヒドロキシ基, アルコール (4) エステル結合,エステル ベストフィット (2) カルボキシ基, カルボン酸 (5) ケトン基(カルボニル基), ケトン (3) エーテル結合, エーテル 炭化水素基はCとHからなる。 官能基はその他の元素 O, N, Sを含む。 解説 構造式で表し,炭化水素基以外に着目する。 称。 (1) C2H5-OH (2) CH3-C-OH (3) CH3-O-CH3 (4) CH3-C-O-C2H5 (5) CH3-C-C2H5 ①官能基そのものの名 ②その官能基を含む物 質の名称。

文法のミスがないか添削お願いします。💦

I I do not think about that. for it r have two reasons First reasong Packages has got damage. are For example, when it is rainy, Packages has wet. If there foods in the packges, you want to not machines in the pakages, they are not eat there. If there are had be broken. Second reason, There security at the packages. If packages leave off by the door, they will be stolen.

教えてほしいです

2 次の英文を読み, 空所に入れるのに最も適切なものを,それぞれ下の①~④のうちから一つずつ選びなさい。 (6) When growing tomatoes, we know we should pick them when they're bright red. With carrots, however, ( 6 ) because they grow underground. ①we should pick them when they turn orange (2) it's hard to know when they're ready (3) we should grow them more carefully than tomatoes (4) it's easy to know when they're bright red (7) Although it is quick, easy and convenient to be able to look up information on the internet, it can sometimes be difficult ( 7 ) because there is so much information. to find what you are looking for (2) to improve the convenience of the internet (3) to get more than what you need that people often experie (4) to have good computer literacy (8) Would you be happier if you were richer? Many people believe that they would be. But research conducted over many years suggests that ( 8 ). People in the United States, for example, are, on average, richer than New Zealanders, but they are not happier. poorer people tend to worry about their financial problems 2 pleasure in life usually comes from great wealth (3) the best way to be happy is learning how to save money greater wealth doesn't generally imply greater happiness (9) Many European rivers were once heavily polluted by manufacturing industries. As a result, wild animals dependent on clean water disappeared. However, as stricter environmental standards took effect, rivers such as the Thames of London have become much cleaner. Consequently, ( 9 ). water quality has continued to decline wild animals avoid drinking from the Thames (3) wild animals are making a comeback in many rivers (4) wild animals no longer depend on clean water

付箋のところなんですけど help 物の形はダメなはずなのになんでここはhelp物(developing nations)になっているんですか😭😭😥

40 訳 彼らのおかげで、報道機関や国民は、カナダの外で起こっている出来事に 払っている。 語句 public 圈国民, 大衆/pay attention to~~に注意を払う/take place 文法・構文 make 人 原形 「人に~させる」の形です。直訳「彼らは報道機関や 注意を払わせる」「彼らのおかげで、報道機関や国民は注意を払っている なります。 make OC の形 Their presence [in the country] makes the Canadian government more conse S V 0 of its responsibility [to help developing nations], (for example). 訳 語句 help 物?? C 国内に彼らがいることによって, カナダ政府はたとえば、発展途上国を支援 責任をより強く意識している。 presence 存在/ (be) conscious of ~ ~を意識している 直訳「彼らの存在は、カナダ政府が意識している状態にする」 ることによって, カナダ政府は意識している」 となります。 「彼らが

英検2級のWritingです。 アドバイス等よろしくお願いします！

●以下のTOPICについて、 あなたの意見とその理由を2つ書きなさい。 ●POINTSは理由を書く際の参考となる観点を示したものです。ただし,これら以外の観点から理由 を書いてもかまいません。 ●語数の目安は80語~100語です。 TOPIC In many Japanese universities, students have to take gym classes. Do you think gym classes are important for university students? POINTS ●Choice ● Health ● Future inatoga ba nonnodo