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数学 高校生

このページで言っているのは、適度に変形してから微分した方がよいということでしょうか?1番左上に、対数微分法の利点と書いてありよく分からなくなってしまいました。

Play Back 対数微分法の利点と不等式の証明 探究例題 5 不等式の証明での工夫 次の問題について,太郎さんと花子さんと次郎さんが話している。 問題: eを自然対数の底, すなわち e = lim1+ 817 +1) とする。すべての正の 実数xに対し、不等式(1+1)* <e が成り立つことを示せ。 (東京大改) 太郎: (右辺) - (左辺)=f(x) とおいて,微分すれば簡単そうだよ。 x f(x)=e-(1+1/2) とおくと, f(x) =・・・あれ? x ... 花子:(1+1/2) はそのままだと微分できないね。(関数) (M) のような形を微分する ときは、対数微分法を利用したよね。 太郎:なるほど。f(x)=e-(1+1/2) 2 の両辺の対数をとればよいかな。 次郎 : それだと, 対数微分法はうまくできないよ。 そもそも, lim 1+ x 1 817 =eより、 x→∞としたとき1+- の極限値はeとなるから,(1+1/2)がエン XC で単調増加することを示すことができればよいよね。 (次郎さんの解答) g(x) = 1+ +12) とおくと,x>0より g(x)>0であるから両辺の対数をと ると x logg(x)=log(1+1/2) ⇔logg(x) = x{log(x+1)-logx} 両辺をxで微分すると ... (A) 花子:対数をとるとよいということだね。 与えられた不等式を、対数をとって変形 してから考えるとどうなるかな。 (花子さんの解答〕 x>0より (1+1)>0であるから,(1+2) <e の両辺の対数をとると ⇔log(x+1)-logx- <0 ..① 10g(1+1/2) <1⇔x{log(x+1)-logx} <1 D (0 <) 18ol x 20 与えられた不等式と同値である① を示す。 ①の左辺をm(x) とおいて, m(x) を xで微分すると (B) (1) (A)に続くように,問題を解け。 (2) (B)に続くように,問題を解け。 (

解決済み 回答数: 1
英語 高校生

56.58.60.61全然わかりません、、解説お願いします、、😭😭 他も答えあっていますでしょうか🥲🥲

56.Although I have been employed by the company since two years, I have received no increase in my salary of £30,000 a year. During that time the cost of living has risen considerably and I am finding it difficult to make ends meet. 〈上智大 > 57. Our teacher told us that we had to finish the report completely until the day after tomorrow. by 動作や状態が完了する期限 untill 状態の継続 @yntil by 58. 〈広島修道大〉 Although the recent decrease in their income, they decided to continue contributing to the charity foundation which provides financial support for orphans. <東京薬科大〉 ④ 59. The power failure in the entire city lasted for two hours, and electricity finally came back at three o'clock on the afternoon. ③ Coon the afternoon. at = 時刻 〈高崎経済大 〉 60. He went abroad with a view to broaden his mental horizons using the money he had earned doing a part time job. 61. The cost of living can be calculated in ① < 鎌倉女子大 〉 term of the average cost of life's basic necessities, such as food, clothing, and shelter. 3 次の日本文の意味になるように空所に適切な語を入れなさい。 62. 我々のリーダーを信じるかどうかは、あなた次第です。 〈南山大 > It's (up) to you whether you believe our leader or not. up to A A次第で<西南学院大) 63. 期末試験に代えて,レポートを書いてもらおうと思います。 place of A <静岡大) We'd like you to write a term paper in (place) of a final exam. in place of A Aの代わりに

解決済み 回答数: 1
英語 高校生

前置詞の問題です。 答えあっていますでしょうか🥲🥲

2 on a 17 3 at 1. John Haiman, a world-famous musician, was born ( England. 1 in ) September 10, 1957, in London, 4 for od tada blow (*) 2. The presentation starts ( (大夫)] 1 on ② at ) 9 a.m. in the conference room. 時の一点 3 in tes vary 0% 16 O 4 for 〈城西大〉 rigin vand ml ST 3. I was born in Tokyo ( ) 1980. A fits or ne 1 at 2 for ③in幅のある時間to 〈名古屋学院大 〉 101 4. "When is our next meeting?” "It's ( 1 at ) Thursday morning." 2 in 特定の日の朝などや形容詞で修飾している場合 on bongie 9H 3 on 4 to 〈北海学園大〉 大 ①① at場所の一点に地点2 in 5. Taro took a local train to Shinjuku. It stopped ( 広がりのない ) every station. /pas 01 D ③3 on 4 with <東京工芸大 〉 ☐ 6. My grandmother was sitting ( ) the sofa ( 1 in, on () th ohh do olib bo ESP ) the living room. 広がりのある空間や領域の中に存在する状態 2 with, at 3 on, in 4 at, on している状態 <活水女子大 〉 1 on 2 in 3 at 7. We have to hurry because the class starts ( 229 4 for entrism id) 8. I got sick last month and lost five kilos, but ( ) a week I was right back up to my regular (大感 weight. ⑪within 2 by 101 Tot within A これからA以内に 〈南山大 〉 brind gilt 3 until no ) blirbrigu o 9T 4 from ) ten minutes. in A これからA経つと right back up to

解決済み 回答数: 1
英語 高校生

答えあってますでしょうか😭😭42番の訳がわかりません、、🥲🥲

So 42. Tell me your cellphone number ( ① in order to 2 in case 3 so that I can keep in touch with you. 9104 as if So that s con do Sが~するために(城西大) 43. ( ) tomorrow, our soccer game will be called off. in case~する場合に備えて 中止される ① If it will rain ② Unless it rains ③ Whether it rains ④in case it rains 私の目で見える範囲では 〈高知大 制限 ① long ② much 時間の 制限 (3 fare 何がやるべきことがある限りあなたはそれをたのしめるだろう 範井の44. AS ( ) as my eyes can see, nothing can be seen but sand. as far as Scan see (訳) ( you have to do something, you might as well enjoy doing it. 45. ① As far as ④ distant Sの見渡す限(山梨学院大) ②As long as but ③ As soon as ④ As many as 摂南大〉 ~している間 (時)いる間口 46. My car was stolen ( ① during ② until ) we were having dinner in the restaurant. 進行形 ③while 4 between 〈南山大 〉 <対比 一方 Pereas =whereas <> 47. Why are some people allergic to eggs, peanuts or animal fur, (c) others are not? アレルギ 毛皮 through/Although ① While 1 because ②while 3 so だけれども48円( にもかかわらず <例>4( 私たちが地球での独自の立場を意識するようになると ) scientists know why earthquakes happen, they are still not able to predict them. ② Whether ③ So CY 4 What as if babbub 〈日本大〉 まだ 予測する ~するにつれて 他の種に対する責任感がより深くなる。 deeper sense of <亜細亜大 > ) more aware of our unique place on Earth, we develop 比較級といっしょいつかれる多 responsibility toward other species, ① As we become If we became uniaoh fo② Since we became ④ We become < 神奈川大 >

解決済み 回答数: 1
英語 高校生

黄色線のhis business が 干渉しないよう という意味になるんですか😵‍💫

3,000 animated characters. 2 Blanc was born on May 30, 1908, in San Francisco, California. However, when he was a child, his family moved to Portland, Oregon, where he attended 問1の正解の根拠 ~へ引っ越した 〜に通った school. When he was young, a game he used to play by himself was to look at, よくしたものだ 一人で for example, a bird, and try to imagine what it would sound like if it could talk. Then, he would try to make the voice that he had imagined. 問1の正解の根拠 ~を集めた 問1の正解の根拠 3 In 1927, Blanc began working for a daily radio program. There, because the sponsors could not afford to hire more actors, Blanc used his own voice for many of the show's characters. After that, he moved to Los Angeles, California, where he joined Leon Schlesinger Productions, an animation studio that had assembled some of the greatest voice actors of the time. This company did the work for Warner Brothers, which developed the cartoons that made Blanc rotair lo subiq soloqu na diw envoys abiyong liw 4 Without a doubt, Blanc's most famous voice is that of Bugs Bunny, the star of the Warner Brothers animated line-up since 1940. Blanc not only provided Bugs Bunny a voice, but also a personality and his famous catch-phrase, "What's up, doc?" The team involved in creating Bugs was very careful about famous. 〜に関わった 問3の正解の根拠 giving him a personality that would be popular for everyone. They decided that Bugs would not be an unkind character; he would just always be peacefully minding his business until someone started trying to hurt him or make him do something he did not want to do. Then, he would fight back. Blanc was very JAKE 問3の正解の根拠 proud of Bugs and thought that the character could be a role model. He said, "Bugs does what most people would like to do but don't have the guts to do." 問2の正解の根拠 5 By the 1940s, Blanc was providing the voices for more than 90 percent of the Warner Brothers cartoon characters. To put that in perspective, from 1940 to 1959, Warner Brothers released almost provided about 540 voices during that time. それを総体的に見ると 600 cartoons. That means Blanc Through this time Blanc appeared on many radio and television programs. He provided the voices for the most 問1の正解の根拠 lovable side characters on extremely popular programs of those days. Then, in the 1960s, he voiced some of the characters in "The Flintstones," the first -126- 生 H

解決済み 回答数: 1