写真の問題は、f(a)×f(0)をやる前に極値を持つことを増減表、もしくはf’(t)のDが0より大きいことを用いて示す必要ってないんですか？？

例題225 3本の接線が引けるための条件(2) 点P(a,b) から曲線 y=x2x に異なる3本の接線が引けるとき,点 P(α, b) の存在範囲を図示せよ. 考え方 曲線上の点(t, -2t) における接線の方程式に(a,b) を代入した3次方程式が,異 なる3つの実数解をもつための条件をα bに関する不等式で表す. |解答 y=x-2x より,y'=3x2-2 SA したがって, 曲線上の点(t, -2t) における接線の方程 式は、 y-(t³-2t)=(3t² − 2)(x −t) つまり, y=(3t2-2)x-2t3 この直線が点(a,b) を通るので, b=(3t²-2) a 2t³ ANAL り 2t3-3at2+2a+b=0 - b=0...... tの方程式①が異なる3つの実数解をもつような(a,b) ←話を変換する の条件を求める. f(t)=2t3-3at2+2a+6 とおくと, STARS f'(t)=6t2-6at=6t(t-a) INSC f'(t)=0 とすると, t=0, a したがって, ① が異なる3つの実数解をもつのは, y=f(t) のグラフがt軸と異なる3点で交わるときより, a≠0かつf(0)・f(a)<0 336E2 f(0) f(a)=(2a+b)(-a²+2a+b) <0より, |2a+b<0 [2a+b>0 1-a³+2a+b<0 [b>-2a つまり, b<a³-2a よって、求める領域は, 450 64 右の図の斜線部分で, 界線は含まない. または または Wa 業式 -a³+2a+b>0 [b<-2a b>a³-2a ba b=a³-2al Nau はグラフで考えよ √2 a b=-2a a>0 のとき ƒ(0)>0 A a a f(a)<0 a < 0 のとき f(a)>0 ! XC x f(0)<0 f(a) と f(0) が異符 号 2015 a=0のとき, f(0) f(a) ={f(0)}20 より, α = 0 は f(0) f(a)<0に含ま れている. 原点で接する.

Pencil-makers started calling the center of the pencil simply "lead, "which is the reason people still talk about pencil "lead"even thoug... 続きを読む

And surely we Americans, most of us starting with nothing, have contributed our share of wanting. 「have contributed 」の部分の文法、文構造がよく分からず困っ... 続きを読む

この整序問題の解答を教えて欲しいです‎^_^ よろしくお願いします。

ⅣV [ ]内の選択肢によって空所を埋め, 日本文の意味を表す英文を完成すると き○印の空所に入れるものは何ですか。 その選択肢の番号をマークしなさい。 (1) よくあることだが, エマは家にいなかった。 Emma was not H her. aras (2) at (3) case 4 home I5 is it 6 often ph the B8 with] (2) 私は彼に家賃を前払いしてくれと言った。 rs deinsge I y[ his 2 in him 8 pay] [one 10 than (3) 彼はとても運がいいのでうらやましい。 tom He is avab att O baduniban olevab [da 2 envy 3 him 4 I 5 lucky 6 man 7 SO 8 that] ve of O 3 asked 4 to 5 advance b6 "ndinurg daid lemon adj season 8 lasted] 解答番号 26 hin sed poltuloyo Insigoloid yea ceb To It si hlasy disqesebi (4) 彼女はドラマに何本か主演したが,どれも1シーズンしか続かなかった。 signa tai "malodas ad of goligarch 29 She starred in a series of dramas, brinio sit am bOglumur vion of 03 8033. auonoatog novo 3 which 4 morem 5 of 6 none ng di bogats und maul 解答番号 27 Thes rent #28

高1英語です。 （2）、（3）、（4）の回答の導き方を教えて頂きたいです🙇‍♂️

(2) A: Do you know Takuya? B: Yes. He does volunteer work. He ( must )( be [b ) a nice man. (3) A: Do you like to play golf? B: Yes, I do, but I (hould ) ( have I started it much earlier. I'm still a beginner. [st (4) A: Will we have )( to "go ) downtown again tomorrow? B: Yes, we forgot to buy a birthday present for our father, didn't we?

こちらの内容ですがあっているかを確認して頂きたいです。 Hintsのところに書いてある熟語等を使って書くみたいなのですが、全く分からずこのような形です。 どなたかお力を貸して頂きたいです。

<It Sitv完了カゴ Exercises in English Composition St would (could/night It 3 仮定法を用いて文を作る 日本語の意味に合うように下線部に適当な語句を書きなさ い。(必要に応じて, [和文和訳] の空欄をうめて考えてみよう。) <ITS'+Vカコ ~ St would (could /might) tv TS > (1) 母が助けてくれなかったら、私は勉強と部活動を両立させることはできなかった だろう。 和文和訳〉「隠れた目的語を補う] + [別の表現に言い換える] 私の母が(私 を) 助けてくれなかったら, 私は勉強と部活動においてうまくやることはできなかっただろう If my mother had not helped me, I would not have been able to balance: and club activities. (2) 時空を超えて移動できるとしたら、過去と未来, どちらに行きたいですか。 和文和駅 [隠れた主語を補う] (あなたは) 時空を超えて移動できるとしたら、過去と未来、 どちらに行きたいですか If you can beyonal rime and space~ would go you the past or the future? (3) 宝くじで一等が当たったら, 世界一周旅行に行くだろう。 和文和駅 [隠れた主語を補う] + [名詞を分解する] (私は) 宝くじで一等が当たったら世界中 を) 旅行するだろう If Ⅰ won first prize in the lotterly, I would travel around the world. (4) 先週からテスト勉強を始めていたら、 今夜徹夜する必要はないのに。 和文和訳[隠れた主語を補う] (私は)先週にテスト勉強を始めていたら,今夜徹夜する必要はないのに If Ⅰ hadstarted studying for the test lastweek, I wouldn't have to stay up. all night tonight. (5) 今週末に野球の練習がなければ, 友だちと買い物に行くのに。 和文和駅 [隠れた主語を補う] 今週末に野球の練習がなければ、 (私は) 友だちと買い物に行くのに If I not played baseball practice, I would go shopping with my friends. 3 Hints (1) 24 部活動 □club activities 「AとBをうまくやる」 do well Aand (2) 23 時空を超えて beyond time and space (3) 22, 23 宝くじで一等が当た る win first prize in the lottery (4) 23. 24 徹夜する stay [sit] up all night (5) 22, 23 野球の練習 u baseball practice

解説お願いします😿😿

discovered resembled called Sealand. establishing rights faced status Many people change countries during their life, but one man has (1) (2) by Roy's grief the rest of son and (10) heir took over in the sea to contain (3) that would be used to fight off invaders. After the war, the soldiers left these platforms and they were forgotten - until 1967. In that year, a British man, Roy Bates, one of the platforms and announced he had started his own country, This surprised people in the UK, who believed they had the (5) . Bates and (6) to leave the platform. However, Roy (8)_ himself by his own country. During World War II, the UK built a number of artificial platforms made a name for weapons to the platform. orders In 1968, a court decided that the UK had no power over Sealand. Just like other places with the that the platform was in international waters. of a country, Sealand, has its own stamps, coins, and passports. It is controlled 'Prince' Michael, and is home to a large Internet business. the people on the island (his family), (7) 6 15

教えて下さると嬉しいです( •̥-•̥ )

A. Circle the correct answer for each question. likely to be jealous of someone. 1. You are more 2. Which do many people decorate at Christmas time? 3. Which are people more accustomed to? a. rich a. a feast b. a tree a. spending money b. receiving awards a. an empire b. a rifle a. an insect b. water a. help it b. ruin it 6. What would profit do for a business? a. excited b. confused 7. Which would people rather be? a. a contract b. a feast 8. Which would you invite friends to share with you? a. a recruit b. a contract 9. Which would you sign? a. being punished b. getting a reward 10. Which would few people enjoy? B. Complete the paragraph with items from the box. Two items are extra. Which of these is a weapon? 4. 5. Which of these flows? discovered resembled establishing rights faced status by Roy's s grief the rest of Many people change countries during their life, but one man has (1) (2) son and (10) heir took over This surprised people in the UK, who believed they had the (5) . Bates and (6) to leave the platform. However, Roy (8). in the sea to contain (3) that would be used to fight off invaders. After the war, the soldiers left these platforms and they were forgotten - until 1967. In that year, a British man, Roy Bates, one of the platforms and announced he had started his own country, (4) called Sealand. b. poor himself by his own country. During World War II, the UK built a number of artificial platforms made a name for weapons the people on the island (his family), (7) In 1968, a court decided that the UK had no power over Sealand. Just like other places with the that the platform was in international waters. to the platform. orders of a country, Sealand, has its own stamps, coins, and passports. It is controlled 'Prince' Michael, and is home to a large Internet business. 11 15 69

教えて下さると嬉しいです(><)

Circle the correct answer for each question. A. likely to be jealous of someone 1. You are more 2. Which do many people decorate at Christmas time? 3. Which are people more accustomed to? 4. Which of these is a weapon? 5. Which of these flows? a. rich b. poor a. a feast b. a tree a. spending money b. receiving awards b. a rifle b. water b. ruin it b. confused b. a feast b. a contract a. a recruit a. being punished b. getting a reward B. Complete the paragraph with items from the box. Two items are extra. 6. What would profit do for a business? 7. Which would people rather be? 8. Which would you invite friends to share with you? 9. Which would you sign? 10. Which would few people enjoy? discovered resembled establishing rights faced status a. an empire a. an insect a. help it a. excited a. a contract grief the rest of (9) by Roy's son and (10) heir took over Many people change countries during their life, but one man has (1) (2) himself by his own country. During World War II, the UK built a number of artificial platforms in the sea to contain (3) that would be used to fight off invaders. After the war, the soldiers left these platforms and they were forgotten - until 1967. In that year, a British man, Roy Bates, (4) one of the platforms and announced he had started his own country, called Sealand. This surprised people in the UK, who believed they had the (5) - Bates and (6) to leave the platform. However, Roy (8). made a name for weapons to the platform. orders In 1968, a court decided that the UK had no power over Sealand. Just like other places with the that the platform was in international waters. of a country, Sealand, has its own stamps, coins, and passports. It is controlled 'Prince' Michael, and is home to a large Internet business. the people on the island (his family), (7) in 11 - 15 69

教えて下さると嬉しいです(><)(><)

A. Circle the correct answer for each question. likely to be jealous of someone 1. You are more 2. Which do many people decorate at Christmas time? 3. Which are people more accustomed to? a. rich a. a feast b. a tree a. spending money b. receiving awards a. an empire b. a rifle a. an insect b. water a. help it b. ruin it a. excited b. confused a. a contract b. a feast a. a recruit b. a contract a. being punished b. getting a reward B. Complete the paragraph with items from the box. Two items are extra. 4. Which of these is a weapon? 5. Which of these flows? 6. What would profit do for a business? 7. Which would people rather be? 8. Which would you invite friends to share with you? 9. Which would you sign? 10. Which would few people enjoy? discovered resembled establishing rights called Sealand. faced status - Many people change countries during their life, but one man has (1) (2). This surprised people in the Bates and (6) to leave the platform. However, Roy (8). (9) by Roy's son and (10) grief the rest of heir took over in the sea to contain (3) that would be used to fight off invaders. After the war, the soldiers left these platforms and they were forgotten - until 1967. In that year, a British man, Roy Bates, one of the platforms and announced he had started his own country, b. poor himself by his own country. During World War II, the UK built a number of artificial platforms made a name for weapons who believed they had the (5) the people on the island (his family), (7) to the platform. orders In 1968, a court decided that the UK had no power over Sealand. Just like other places with the that the platform was in international waters. of a country, Sealand, has its own stamps, coins, and passports. It is controlled 'Prince' Michael, and is home to a large Internet business. in 11-15