この問題でこうやって解くのはダメなのか教えて欲しいです！それとどうしてa-bは実数と言う必要があるのかと、青い波線のところは必要なのか教えてください！

32 第1章 式と証明 練習問題 9 (1)a0b0 のとき a+b√ab 0<(1-8) (1-6) 2 が成り立つことを示せ.また,等号が成り立つときはどういうときかを 答えよ.××△ 0+0<1+do (2)a>0,b>0 のとき, b であることを示せ.xxx 開閉 精講 不等式 A>B を直接証明することが難しい場合,両辺を2乗した 不等式 A'>B2 を証明するとよい場合があります. A≧0,B≧0 であることがいえれば, 借り立つ A'B' ⇒A>B ...... が成り立つので,A'>B2が証明できれば,A>B は証明できたことになり *)は一般には成り立たないことに注意してください. A, B が 0 以上 はない場合は,A=-2, B=1 のような反例が作れます) . (1)の事実をうまく使ってあげることで証明できます。 解答 ath\2 ないことに 左辺(右辺 = (a+b)-(ab)240円ない 考え方なのです。 a²+2ab+62 -ab- 4 0(1-6) a²-2ab+b² a2+2ab+62-4ab 4 ところ (a-b)2 4 -≧0 (a-b は実数より) よって、 (左辺) (右)2 20,620 より(左辺)20(右辺)なので A≧0, B≧0 であれば A2≧B2 ⇒ A≧B (左辺) ≧ (右辺) 等号が成り立つのは, (a-b)2=0 すなわち a=bのときである.

(3)で酸素を乾燥させるのは捕集した酸素にはいってる余計な水分を取り除くため。というのはわかるんですが(2)で求めた分圧は酸素と余計な水分入りの分圧を求めているってことですか?

49 水上置換法 分率はいくらか。 例題 過酸化水素水に触媒を加え, 発生した酸素を水上置換法によりメ スシリンダーで捕集したところ, 体積は1.02×10Pa, 24℃で 0.808Lであった。 記述 気体を捕集した後、 その体積を測定する際には, メスシリンダーを上下させて内側と 外側の水面を一致させる。この理由を簡単に説明せよ。 lea 24℃での飽和水蒸気圧を3.0×10 Pa とすると, 捕集した酸素の分圧は何 Paか。 (3) 捕集した酸素を乾燥すると, 標準状態 (0℃, 1.01×10 Pa) での体積は何Lか

What 𓏸𓏸do you like？の𓏸𓏸って単数形と複数形どちらにするべきなのですか？学校では質問に対する答えがひ1つなら単数形、2つ以上なら複数形と習いましたが、答えが書いていなくて、質問だけを書く問題があり困っています💧教えてください

この赤線を引いたところなのですが、これはabilityが省略されてますか？それともcognitiveがdeclineにかかってますか？教えていただきたいです。

S This anxiety has led to the popularity of "brain training games" These C V are apps*2 (and games that are designed to ( 7 ) our memories and general V thinking abilities, as well as to protect us from cognitive decline in old age. There are now numerous companies that develop and sell such products, which C app store. (Usually, they are simple sinto you can easily find on your smartphone's t de tasks like sorting objects into groups

英語の質問です！ （A）の下線部がある文の 和訳の仕方を教えてほしいです！！ またノートの副詞のかたまりとか 間違って入れば教えてほしいです！！ よろしくお願いします🙇🏻‍♀️

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教科を英語で？

be subject to AでAを必要とするになるのはなぜですか？

19番です。なぜDか教えてください。

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19～21番が分かりません、、解説お願いします、、😭😭他の問題の答えはあってますでしょうか🥹🥹

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答えがないので分かる方確認していただきたいです🙇‍♂️ 16.B 17.D 18.D 19.A 20.A で合っていますか？

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