なぜ変数に置き換えるのですか？ 1行目でおいた文字ではないのはなぜ？ 1行目でおいたものを代入するとおかしくなるのは分かりますが、なぜ置き換えるのですか？

考え方 解 * 座標平面上で,点P(x, y) が x2+y2≦2 を満たしながら動くとき, 次の点が動く領域を図示せよ. (1) Q(x+y, x-y) 以上の (1) x+y=X, x-y = Y とおき, x,yを X,Yで表すことを考える (2)x+y=X, xy=Y とおき, (1) と同様に考えればよいが,そのとき, (1) と異なり、 と、 X, Y が実数であっても x,yは実数とは限らないので, x, y が実数として存在 するための条件が必要になる. JUAL Latestet 20 (1) x+y=X, x-y = Y とおくと, また、x+yX-Ⅰシンプルにおいてみる x= C 2 ソニー 2 , y=- そうな x2+y2≦2 より, C = ( x + Y ) ² + ( X = X ) ² X-Y 2 2 2 したがって 変数をx, y におき換えて, DIVERS x2+y24 ≦2 (2) R(x+y, xy) X2+Y24 1024 55 よって,点Qが動く領域は右 この図の斜線部分で、 境界線を含む. YA 2x² + y² =4 2x2+y2=4 15 EX-20 HO -2 SEE 27 115 x,yを X,Yで表す . X, Y が実数のとき, も実数になる. +2 x,yを代入する. ($19 Q(X,Y) が動く領域 12 x 8TUAR 28 SOCI58 図は xy平面上にかく 35C5C

早稲田大学の社会科学部の過去問でThe division of Germany between the Soviet Union and the West was one future of bi-polar world order.という文章のfuture が特徴と訳され... 続きを読む

英語 文法です 4、6行目のthatの用法を教えて欲しいですm(*_ _)m

新しい 9 The new focus on grit) is part of a larger scientific effort to study the personality traits 現実世界におけ達成度を最も正確によそうする個性を研究しようという。 OVER CE 長い間 / that best predict achievement in the real world.// While researchers have long focused / on 知能測定 measurements of intelligence / such as the IQ test / as deciding markers of future success, / ~ECT. these scientists point out / that most of the variation in individual achievement / has nothing to do with being smart. // Instead, /it largely depends on 2 personality traits / such as grit and honesty. It's not that intelligence isn't really important / Newton was clearly a genius / 決して十分ではない but that having a high IQ/is 3 not nearly enough. //

social proof dictates that individuals feel that they are behaving correctly ここで言うdictatesはどういう意味になりますか？？？

外国の方への防災対策の英作文を書いたのですが、文法があっているのか分からないのと、もう少し文章を付け足したいのですが、何も思いつきません。 どなたかおしえてくださいませんか。

A divaste can happen at any time. So, we must always be prepared. Tax example, you should check the hazard map in It tells us about evacuation route and a safe place of refuge. You should go get it from the city hall before disaster strike.... Also, you always keep in touch with the locals. Nothing is more efficient way to relieve damage than helping cach other in the community at the time of disaster.

添削していただきたいです。

Do companies need to improve the noy they treat their workers? and I think that companies need to improve the way they treat their workers and I have two reasons to support my opinion. The first reason is that companies should give same oppotunities to female. Some companies discriminate between male and female. For example, they decrease the number of recruies of female, and employees divided works such as cleaning and dest work between man women so they have to aim the mole female equality. The second reason is that work-life balance is serious issue by employees because they spend too much time to work. Companies should make holiday and decrease overtime work. If they do that, workers will balance work and life 110 for the two reasons mentioned above that companies need to improve the way they treat their workers. 90

丸しているものが答えなんですけどなんでその答えになるのか分かるところだけでいいので教えて欲しいです🙇🏻‍♀️

(6) 彼らは明日の今頃はそのレストランで昼食を食べているでしょう。 They will ( ) lunch at the restaurant about this time tomorrow. ア. have イ be having ウ, having (7) 兄は私にフランス語を学ぶようアドバイスしました。 ウ. would (8) 彼は私がそのパスケットボールチームに入ることを強く要求しました。 He insisted that I ( ) join the basketball team. ア. could I should ウ. would My brother advised me that I ( ) learn French. ア. could イ should (9) その計画は成功する可能性が高い。 (10) その子どもを助けるなんて、君は勇敢だった。 The plan has a good chance of ( ). ア. result イ effort ウ. experience エ success (1) 彼女は攻撃を耐え抜いた。 You were ( ) to save the child. ア. honest イ brave ウ. gentle エ. sensitive (15) (12) 私の母は夕食の準備をするのに忙しい。 My mother is busy ( ) dinner. 7. reaching 1. searching preparing I. rolling She ( ) the attack. ア. surprised イ, surveyed ウ. surrounded エ survived (13) 彼女の最新小説の題名は『動物園』です。 The ( ) of her latest novel is "Zoo." ア. topic イ. label ウ title エ. information (14) 都市に住むことと、 いなかに住むことと比較してみなさい。 ( ) living in the city with living in the country. ア. Conduct ⓘ Compare ウ. Attack I. Decorate (19) 古紙はすべて再生利用している。 We ( ) all our waste paper. ア. prefer, hate ウ. divide エ recycle (16) 多くの人々がその戦争で死んだ。 Many people were ( ) in that war. ア. hurt イ killed ウ. attacked エ. wounded (7) これらの古い本を保存しておこう。 Let's () these old books. ア, deserve イ. observe ウ. reserve エ preserve (18) これは根本的な重要性に関わる問題だ。 This is a question of ( ) importance. ア. typical イ. individual ウ fundamental I. certain 彼は封筒の裏に自分の名前を書かなかった。 He didn't write his name on the back of the ( ). ア. title イ. copy ウ envelope I. paper

丸しているものが答えなんですけどなんでその答えになるのか分かるところだけでいいので教えて欲しいです🙇🏻‍♀️

(6) 彼らは明日の今頃はそのレストランで昼食を食べているでしょう。 They will ( ) lunch at the restaurant about this time tomorrow. ア. have イ be having ウ, having (7) 兄は私にフランス語を学ぶようアドバイスしました。 ウ. would (8) 彼は私がそのパスケットボールチームに入ることを強く要求しました。 He insisted that I ( ) join the basketball team. ア. could I should ウ. would My brother advised me that I ( ) learn French. ア. could イ should (9) その計画は成功する可能性が高い。 (10) その子どもを助けるなんて、君は勇敢だった。 The plan has a good chance of ( ). ア. result イ effort ウ. experience エ success (1) 彼女は攻撃を耐え抜いた。 You were ( ) to save the child. ア. honest イ brave ウ. gentle エ. sensitive (15) (12) 私の母は夕食の準備をするのに忙しい。 My mother is busy ( ) dinner. 7. reaching 1. searching preparing I. rolling She ( ) the attack. ア. surprised イ, surveyed ウ. surrounded エ survived (13) 彼女の最新小説の題名は『動物園』です。 The ( ) of her latest novel is "Zoo." ア. topic イ. label ウ title エ. information (14) 都市に住むことと、 いなかに住むことと比較してみなさい。 ( ) living in the city with living in the country. ア. Conduct ⓘ Compare ウ. Attack I. Decorate (19) 古紙はすべて再生利用している。 We ( ) all our waste paper. ア. prefer, hate ウ. divide エ recycle (16) 多くの人々がその戦争で死んだ。 Many people were ( ) in that war. ア. hurt イ killed ウ. attacked エ. wounded (7) これらの古い本を保存しておこう。 Let's () these old books. ア, deserve イ. observe ウ. reserve エ preserve (18) これは根本的な重要性に関わる問題だ。 This is a question of ( ) importance. ア. typical イ. individual ウ fundamental I. certain 彼は封筒の裏に自分の名前を書かなかった。 He didn't write his name on the back of the ( ). ア. title イ. copy ウ envelope I. paper

答えを教えて欲しいです

Past Tense, Past Progressive (2) Warm Up! (1) ( に入れるのに正しくないものを1つ選んでください。(b) Warm Up He began to practice karate only ( ). 1. recently 2. two weeks earlier 3. these days 4. one week ago Part 2: Grammar Section 《解説と解答》 「彼はつい最近 (2週間早く; 先週) 空手の練習を始めた」 という意味ですから、 3. these days のみが、 過去形の動詞と共に使えない表現です。 these days は 「このごろ (最近)」 という意味で すが、 現在形 現在進行形や現在完了形とともに用います。 Warm Up! (2) ( に入れるのに最適な表現を1つ選んでください。 John didn't want to see me because he () his lunch. 1. once had 2. was having 3. has 4. took 《解説と解答》 「ジョンは昼食中だったので、私に会いたがらなかった」 という意味ですから、 ジョンが私に会い たがらなかった理由を完成させます。 私に会いたがらなかった時に進行していた動作が「昼食を取る」 ことですから 2. was having の過去進行形にするのが適切です。 なお、 have lunch の have は 「食 べる (eat) 」 の意味ですから、この意味の場合haveは進行形で用いることができます。 Exercise 5: Fill in the blanks in these sentences with one of the choices below. 3. A pine tree (a) stands 1. While Cindy. (a) was playing (b) is playing (c) played her violin yesterday, two of her strings broke. (d) has played up late the night before to 2. My paper was due yesterday, so I complete it. (a) stayed (b) stood (b) would stay (c) stay (d) am staying at the gate, and a girl was standing in its shade. (d) standing (c) was standing 4. The car wasn't here yesterday because Jane takes the bus, but the drivers were on strike. (a) uses (b) is using (c) has used 5. One of the boys (a) fall (b) falls 6. When the door bell rang, I (a) take (b) am taking 7. Mr. Brown (a) leave (b) is leaving (d) was using in the river, but I dived in and saved him. (c) were falling (d) fell a shower. (c) was taking the office only a minute ago. (c) was leaving 8. During the last earthquake books (a) fall it. She generally (b) are falling (c) had been falling (d) taking (d) left from the shelf. (d) fell Unit 4 Exercise 6: Fill in the blanks in the passage below with the correct form of the verb in parentheses. The first one is done for you. Mark (live) lives in Japan. His family (come) five years ago, when his father (start) Osaka. At that time Mark was still only 10 years old, and he (do) not want to leave America. But now, he (have) Osaka, and he likes living there. During the last summer vacation, Mark (go) United States with his parents. They (visit) Washington D.C., and Boston, and (enjoy) They also (go) Mark's grandparents. His grandparents (be) see Mark. One evening, as they (eat) the telephone (ring) Mark and his parents (talk) over one hour. Now Mark is back in Osaka. He (want) his grandparents again. He is (plan). America by himself next time. to Japan his own business in many friends in back to the New York, seeing the sights. to a small town in Connecticut to (see) very happy to a big chocolate cake, It was Mark's aunt in California. with her one after another for to (visit) to go to

お願いします

WRITING 次のそれぞれの英文の( )の中の語句を並べ替え、日本語の意味を表わすように英文 を完成させなさい。 1.他の数種の鳥と違い、カツオドリは水中に垂直降下できる。 (other/unlike/birds/some), gannets can dive vertically. 3 gannets can dive vertically. 2. 彼女は日々の心配事を全て忘れて、 3週間の休暇にハワイ旅行へと旅立った。 She took off on a 3-week holiday for Hawaii, ( all / behind / worries / her / leaving) her. She took off on a 3-week holiday for Hawaii, her. 3. 台風が東京を直撃する可能性は無いように思える。 (possibility/seems/be/there / to / no) of the typhoon hitting Tokyo. of the typhoon hitting Tokyo.