(2)の問題で D＞0の時だけm＞0 を入れるのはなぜですか？？

0 本例題 40 解の種類の判別 mm は定数とする｡ 次の2次方程式の解の種類を判別せよ。 (1) 2x²+8x+m=0 CHART & SOLUTION 2次方程式 ax2+bx+c=0 の判別式をD=62-4ac とすると D > 0 ⇔ 異なる2つの実数解をもつ DE (2) mx²-2(m-2x+1=0 D=0 ⇔ 重解をもつ 0=5+3 5+²x D < 0 ⇔ 異なる2つの虚数解をもつ 特に, b=26'′ のときは、11 (1) 判別式をDとすると を用いるとよい。 ac FATINOAR (2) 問題文に｢2次方程式｣ とあるから, (x2の係数) ≠0 すなわち m≠0 であるこ 意する。 √3+√718400 D=4-2.m=16-2m=2 (8-m) ① かつ D> 0 すなわち D={-m-2)-m・1=m²-5m+4=(m-1)(m-4) のとき, <00<m<1,4<m mの値 D0 すなわち m<8のとき, 異なる2つの実数解をもつ。 D=0 すなわち m=8のとき,重解をもつ。符号カ D<0 すなわち m>8のとき, 異なる2つの虚数解をもつ。 (2) 2次方程式であるから m=0 ① 判別式をDとすると 異なる2つの実数解をもつ。 ① かつD=0 すなわち m = 1, 4 のとき, 重解をもつ。 ① かつ D<0 すなわち1<m<4 のとき 1. 基本 異なる2つの虚数解をもつ。 ← 文字係数 次方程式 P RACTICE 40 ② SREA mは定数とする。 次の2次方程式の解の種類を判別せよ (1) r²-2mr 12 ◆ m につ It (m) の解 m< と① 範囲。 INFORMATION 「2次方程式」か,「方程式」か 上の例題の(2) において, 「2次方程式」 という断りがないとき, m=0,n 分けする。m=0のとき, 1次方程式 4x+1=0 となり,1つの実数解

5. この問題の正解は④なのですが、①と③がなぜ駄目か教えて下さい。 受動態の分詞構文と考えられませんか？

C 3. Nowadays not many students want to be teachers, probably because they find teachers' salaries very ( ). 1 cheap expensive 3 inexpensive 30x²Fope C₁₂ 4. Mary suddenly burst out crying and explained the details of the accident. そして <Only then ) I understand what she had been through. (2) that 3 if 1 but 2 about the final examination. Being 1 After talked 3 When talked 6. She was born ( 1on, in, on with my students, I realized I had given them the wrong information Dute ) August 19, ( ) 1946, ( 2 in, on, in 7. When I went to talk to the proforcon low 2 During talking 4 While talking Fam ④④4 did (3) on, on, on ) California. 4 in, in, in

英語が苦手でさっぱり分からないです。 なぜこの、runと言う意味が、運営されてなのかが分からないです。なぜこのように訳できるのでしょうか？

43 副詞節で省略される many 次の英文の下部を訳しなさい which are connected with the "dailies," though not run by the In Britain there are a number of Sunday newspapers, same editor and staff. The Sunday papers are larger than the daily/ papers and usually contain a greater proportion of articles concerned with comment and general information rather than (駒沢大) news. 英語は「節約の言語」です。 共通関係を駆使した英文構成もその1つですし、 法 語句の省略も技法の1つです。この課では、時・条件・譲歩などの副詞節の中 で 〈S + be 動詞〉 が省略されているのを見抜くのがポイントです。 に注目してください。 まず, 第1文の関係詞節中に組み込まれた though not run 後に by 〜が続いていますから、明らかに run は過去分詞です。とすると,接続詞 though の後に 〈S + be + run) と続くと節の形が整いますね。 いろいろ 新聞の日曜版が (In Britain), there are a number of Sunday newspapers, (Vi (FB) (先) M ~とつながりがある 日新聞 [many (of which) are connected (with the dailies"), s(ft) (代) V (受) M [though they S 運営されてによって 日刊と同じ編集長 are not run (by the same editor and staff)]]. V (過分) M (S+ be 省略

198の問題で解説みてもよく分からないのですがなぜBeingなんですか…教えて欲しいです🙏

98 (0) 展 ERY mang Sebéo notenbecause the room was terribly noisy (2) heard ) no available information on the crime, the police asked 文時開 noit 92 (1) hear There ( the mass media for cooperation. 1 being 2 having 3 is (4) seems 400 <鹿児島大)

誤文指摘の問題なのですが全くわからないです🥲 教えてください。

1. The most famous case of an animal says to be capable of counting is that of a horse in A B C Germany which was called Clever Hans. D 2. The horse's owner believed that animals can think and reason like we can and that A B C this faculty can be brought out by training the animals. D 3. He trained Clever Hans o give the answers to problems of the arithmetic. A B C D 4. The horse gave the correct answer by tapping the right number of time with its A B C D forefoot. 5. Clever Hans was taught to tap units with one forefoot and tens with another. A B C D 6. The animal gave the correct answers to not only additions but also to other processes B C D of arithmetic. 7. It gave the right answers too when the questions were not spoken but A show to it written on a card. B C D 8. This case was so much talked about in the newspapers that a committee of scientists A B Beat were formed to investigate the astonishing powers of the horse. C nodiby D

25番の正誤問題、間違っているのはthatでwhatが正しいのですが、thatは代名詞で後ろの分はO格の関係詞節なのかと思いました。 この考え方のどこが間違っていますか？ 教えて下さい🙇‍♀️

✓ 25. 27. 30. information desk. / ①③⑤ (不要語②) Which one (of these) dictionaries are (you interested in ・分詞形容詞のind If you cannot find that you are s' ✓ police man. a 26. When police officer came over to driver's license, please." - 第11講 実戦演習問題(1) looking for please ask us at the my car, he said, Let me see your ~によって、 C VI 0₁ The only way I can get you do anything is by giving you what you want. S to. こと

この並び替えの答え教えてください！

090120 38 最新の商品に関してさらに情報が必要でしたら、私どものウェブサイトをご覧ください。 (Oyou on should require our information further) latest products, please visit our website. 3 4 0 0 5 (6)

中学歴史です 東大寺と東大寺南大門の違いを教えてください！ よろしくお願いします🙇‍♀️🙇‍♀️🙇‍♀️🙇‍♀️🙇‍♀️ 時代が違うのか同じなのかを特に知りたいです！

なんでandが入ったらwent out に変化するのかほんとに分かりません😭😭😭😭 解説お願いしたいです🙇‍♀️

3) I used the Internet, looking for the information. 4) She took an umbrella and went out in the rain.

空所2に入るものを選べ。 1.important 2.interesting 3.active 4.ambitious 答えは3なのですが、何故ですか？ importantはダメですか？

If you are asked why you study, your obvious answer is that your studies will be useful because you will profit by the knowledge and the work habits that you acquire. You will apply the things you learn, not merely in making a success of your vocation, but also in all your thinking, talking, and writing, and in conduct of the most varied sorts. When you think through new problems or draw new conclusions, you are using your knowledge. ( 1).(when you give advice or information to or discuss issues with your friends and when you write, plan, or take action in social and political affairs in everything you do -you are using your knowledge. The one great aim of all your study is increased efficiency of thought and action through putting your knowledge and skill to use. Using knowledge is not only the aim of your studying; it is the very essence of the study process. Knowledge is not something that you can absorb and hold for later use. Knowledge is acquired only through thinking and doing. The material in books becomes part of your mental equipment only when you succeed in tying it to the rest of your knowledge and use your ideas in relation to one another. The common saying "We learn through doing" says it all. Learning is an (2) process. In order to acquire new ideas, you must react to them, put them to use, talk and write about them, and act upon them.