（1）のY≦1/4X²まではわかるのですが、それをなぜ小さいx.yに置き換えてもいいのでしょうか？最初のX=x+y Y=xyを代入したりはしないんですか？？（黄チャート　重要例題112）

00000 重要 例題 112点 (x+y, xy) の動く領域 (1) x, y がすべての実数値をとるとき, 点 (x+y, xy) の存在する領域を図 示せよ。 が走る域を 変わるとき､直線 (2) 実数x, y x2+y≦1 を満たしながら変わるとき, 点 (x+y, xy) の IRALA [類 東京工大] 動く領域を図示せよ。 CHART O SOLU [解答] OLUTION 点 (x+y, xy) の動く領域 X=x+y, Y=xy とおき, 実数x, y が存在するための X, Y の条件を考える・・・・・･ のとりうな (1) X=x+y, Y = xy とおくと, x,yは2次方程式 2-Xt+Y=0 の実数解。 この2次方程式が実数解をもつ条件を考える。 XAS HA (2) x2+y2は,x, yについての対称式であるから, X, Y で表すことができる。 ただし, (1) の範囲に注意。 る人 (1)X=x+y,Y=xy とおくと, x,yは2次方程式 p2-(x+y)t+xy=0 すなわち - Xt + Y = 0 の実数解である。この2次方程式の判別式をDとすると D=X²-4Y □D≧0から Y≤1x² 変数をx, y におき換えて ys 1x² 1 したがって 求める領域は、 右の図 の斜線部分。ただし, 境界線を含む。 (2) x2+y≦1 から ...... (x+y)²-2xy≦1 すなわちY' 示 DKK のところ! 2数α, B に対して p=a+β,g=ab とすると,α, B を解とす る2次方程式の1つは x²-px+q=0 y 50CC y=²x²5 TS HOO xy平面上に図示するの で,x,yに文字をおき 換える。 T

3行目、with whomの部分は関係副詞ですよね？ どのように訳せばいいか、文構造のとり方を教えてください🙇‍♀️

次の英文を読んで、設問に答えよ。 第1講 e.g. The *therapeutic use of pets as companions)has gained increasing attention in recent years for a wide variety of patients people with AIDS or cancer, the elderly and the mentally ill (Unlike people, with whom our interactions may be quite complex and unpredictable, animals provide a constant source of comfort and focu X S X 5 for attention. Animals bring out our nurturing instinct. They also make us feel saf (1) and unconditionally accepted. We can just be ourselves around our pets. らしきおこさまた stress-induced symptoms)<I x Research has shown that pet ownership can reduce $$E surgen 343 a study, people undergoing *oral surgery spent a few minutes watching tropical fis O' in an aquarium. Their relaxation level was measured by their blood pressure, muscl わかった Xp 10 tension, and behavior. It was found that the subjects who watched the fish wer

この文についての色々な質問なんですが、1文めの後のピリオドの後に前置詞置いて前の文を修飾なんてできるんですか？なんのためのものなんでしょうか？ 後二文め3文のtheyって欧米人よりBritishを受けているって解釈の方が意味が通る気がするんですが欧米人になる根拠って合ったり... 続きを読む

them 50 演習 50 (問題→本冊: p.180) Westerners like to make friends so that they can express their feelings. With the exception, perhaps, of the British, they seek intimacy and try to avoid small talk. They don't like talking around a subject when they can discuss it head-on. 【全文訳】 欧米人は,自分の感情を話せるように友人を作りたがる。 恐らくはイギリス 人を除いて,欧米人は親しくなりたがるので世間話を避けようと努める。彼らは, 問題を真正面から議論できるというのに回りくどく論じるのを嫌がる。 to beaut (税

合っているか確認お願いします！

Match each word with the best meaning. g a 1. 2. 3. amazing border eruption 4. flow 5. ___b__formation 6. 7. 8. 9. 10. h a. a line marking the edge between two countries b. a body of rocks with a certain shape c. all of the natural parts in an area or region d. find in a particular place e.go around; be found on all sides of landscape 224-7⁰ f. an explosion or out-pouring (of a volcano) locate g. great; able to make a person say, "Wow!" rank h. move like water over or down something i. an object that has been built j. put in order of value, best to worst J structure surround

1部でもいいので丸つけお願いします🙇‍♀️ 特に番号の隣に印がついてるのは分からなかったものなので解説も付けてくれると嬉しいです😭

ばない 場合 E] -0 ても」という〈譲歩〉 の意味の場合は, no matter when SV で書きかえられる。 でも/いつ･・･ しても｣ という意味の副詞節。「いつ･・・し Chowever +形容詞 [副詞] + SV は 「どんなに <形容詞[副詞]> でも」という意味の副詞節。 however が導く副詞節はすべて 〈譲歩〉 の意味なので no matter how ... で書きかえられる。 However[= No matter how] hard I studied, I got a bad grade. 「どんなに一生懸命勉強しても、私は成績が悪かった」 Practice) ① 英文中の空所に入る適切な語または語句を選択肢から選びなさい。 1. I met a girl on the street) ( ) used to live in my neighborhood. whom 2 who 3 where 4 which 2. This is the department store 1 which 2 where sudo oli oban 3. Picasso was a painter what 4. The house ( that 5. 6. The hotel ( 1 which 2 whose ris) roof you can see over 2 which Tavared savoln Undsend suomi T vi sebi liseyid daw ova 7. Vancouver is the city 1 which ) his grandfather founded fifty years ago. 3 what sach O 4 whose ideas were far ahead of their time. V orly 3 whom 4 which e] ni bina noriq2 ( ou can see over there is Mr. Johnson's. 3 who 4 whose wagen voy 4 on which dvig wor at in the hotel ) the conference was held is near the city hall. where 4 what 2 on which de Everes 10. I don't know the reason ( 1 which 2 why 3 in that ) I wish to visit this summer vacation. a 3 where danob liw VT, .09 never forget the day () I reached the top of Mt. Everest. on the clay. ➡093 which for which 3 which on on day 8. John remembers the day ( ) he left Japan. the de orad 3 which 0 where 2 when 9. The time will soon come ( which to I2 when ed what nomie ( ) [we can enjoy space "S mon3 what 0 travel. 4 where is et oliw wod 091 ) she suddenly quit her job. 3 how 〈 山梨学院大 > 4 when amolowW**) amos ct 091094 (T The lort i 4 wherever sloda) 101 ➡➡091 102 <国士舘大〉 of phel 092 <福岡大> 092 〈 名古屋経済大 > 東北福祉大〉 ➡094 ➡➡094 <東海大 > 10 関係詞 ➡094 **) ➡➡094 〈 淑徳大〉 91

教えてください！！

12. In this election, I am ( ) Henry because he is a very decent person. →120 in 2 for 3 against 4 by (b) 13. () most insects, bees have three pairs of legs and four wings. →120 Alike 2 Like 3 Likely 4 Likewise (**) 14. The new road will shorten our journey ( ) ten minutes. →120 in 2 by 3 after 4 for (*) 15. We saw a boy playing (3) his little brother on his back. →122 1 at 2 on 3 with 4 for (*) 16. The woman (O) the white coat is my sister. → 122 in 2 down 3 to 4 up (***) 17. Shall we talk () a cup of coffee? →122) over 2 at 3 on 4 in () 18. I like all subjects (0) geography. →123 except 2 exclude 3 however other (X) 19. () the bad weather, they went on a field trip. →123 Because of 2 In spite 3 Although 4 Despite () 20. John announced that he was going to study law, (4). →124 ) very surprised 2 greatly surprising 3 surprising to us 4 much to our surprise ( 21. Hi! It's me. I'm sorry I'm late. I'm running () the direction of the ticket gate. I'll be there in a minute. →124 ① in ② of ③ to ④ within 〈大学入試センター〉 22. If you find the movie (), I will go and see it with my sister. →125 interest interested 3 of interest 4 to interest (**) 23. The castle was constructed () precision as the king had planned. →125 1 at 2 by 3 in 4 with (**)

解答の根拠と考え方を教えてください！

問3 次の図4は、図1中のイ国の地形図 (5万分の1、原寸一部改変)の一部である。 地形図から読み取れることを述べた文として適当でないものを、以下の①~④のう ちから一つ選べ。 tolime -1000 Gierklands U Typsurdegga ¥1,580 メ Holesetry 大702 Björdalssret T 1000 Px ! S 1193 x 1553* oledalsegga 4 *1543 1706 Hestafr R 込 1667 Blahornet Sandfang 1248 1602, Sydats 1382 green/1436 Heste- breen ① P地点は北向きの谷の中にある。 2② Q地点(点線で囲まれた部分) は凹地にある。 3 R地点にある湖はS地点にある湖よりも湖面高度が高い。 T地点とU地点の間の水平距離は1kmよりも長い。 x1658 N

スピーキングテストで、プレゼンでオーストラリアの学校の紹介をするのですが、英文に間違えがあれば教えて欲しいです。お願いします🙇‍♀️

to talk about Australian school. such I'm going going to First, I introduce about Australian uniquely subjects. Australian school has some uniquely subjects as drama, second language, business study. Students learn various expression way in drama class. And, students learn some languages such as I talian, Chinese and so on in second language class. And, students do project in a group in business study class. Also, students play games peculiar to Australia in P.E. lesson. Second, I introduce about Recess. Australian school don't have break time. So, Australian school have that time instead of break time. Recess is what is called snack time. Students. bring, snack and flute. Also some students, eat lunch at that time. That's all. Thank for listening. you Date

(3)と(4)は有効数字使わなくてもいいのですか？

練習問題 10 速度の合成 速さ 2.0m/sで流れる川の上流に A 町,距離 2.0 X 10°m だけ離れ た下流にB町がある。 流れのない 水面上で速さ 6.0m/sで進むこと (ABJ) 2000m 6.0m/s 有効数字2桁 (B町 → ) 2.0m/s ができる船がA町とB町との間を往復する。 (1) 船が A 町からB町に向かって進むとき, 岸から見た船の速さを求めよ。 (2) 船がB町から A町に向かって進むとき, 岸から見た船の速さを求めよ。 (3) A町からB町まで下るのに要する時間を求めよ。 (4) B町からA町までさかのぼるのに要する時間を求めよ。 8 ) 2000 (5) A町とB町とを往復する間の平均の速さを求めよ。 250 40 8.0 mls 4.0m/ (1) (2) (3) 2,5x10° Arly 250041 (4) 5.0×10 和500粒 6,80ml (5)

この英文の17行目なんですけど、under the control で〜に支配されてと訳すのは分かるんですけど 日本語訳だと、集中力もまた意志に支配されていなければならない。と書いてあって意志という単語は 書かれてないのに、どうしてこういう訳なるんでしょうか?

14 集中力とは何か 10 Besides the intellect, the power of concentration is a very important quality, which few people acquire except throug education. It is true that it develops naturally to some extent, bu people are not likely to acquire enough concentration without a 5 long period of intellectual education. 2 There are three qualities which distinguish perfect concentra tion from imperfect concentration: perfect concentration should be intense, prolonged and voluntary. Intensity is illustrated by the story of Archimedes. He is said to have taken no notice when 10 the Romans came to kill him, because he was absorbed in a mathematical problem and bent on solving it. To be able to concentrate on the same thing for a long time is essential to difficult achievement. As long as the object is of great interest, this is brought about naturally. 15 Most people can work on a mechanical puzzle for a long time; but this is not in itself very useful. To be really valuable, the concentration must also be under the control of the will. I think 18 it is above all the control of the will that is nurtured by education. Check!! concentration () 183 wo