数Cの複素数平面の問題です。(1)では場合分けをしなかったのに(2)では場合分けをする理由が分からないので教えて欲しいです。

515 重要 例 96 複素数の極形式 (2) ****** 偏角の範囲を考える ①①①①① 次の複素数を極形式で表せ。 ただし, 偏角0 は 002 とする。 (1) 指針 cosa+isina (0<α<z) (2) sina+icosa (0≦x<2π) 基本 95 既に極形式で表されているように見えるが, (cos+isin●) の形ではないから極形 式ではない。 式の形に応じて 三角関数の公式を利用し, 極形式の形にする。 (1)実部の符号 - を + にする必要があるから, cos (π-0)=-cos0 を利用。 更に 虚部の偏角を実部の偏角に合わせるために, sin (π-0)=sin0 を利用する。 (2)実部の sin を cos に, 虚部の Cos を sin にする必要があるから, COS (一)=sine, sin(10) 0 =cose を利用する。 また、本問では偏角 0 の範囲に指定があり, 002 を満たさなければならないこと に注意。特に(2)では,αの値によって場合分けが必要となる。 3章 138 複素数の極形式と乗法、除法 CHART 極形式 (cos+isin) の形 三角関数の公式を利用 (1) 絶対値は 解答 また cos(b)=-coso sin(π-0)=sin O √(-cosa)+(sina)=1 -cosa+isina=cos(π-a)+isin (π-α) SI...... 1 <<πより,<<πであるから,①は求める極偏角の条件を満たすかど 形式である。 (2)絶対値は また ここで TC √(sina)²+(cosα)²=1 (+1-31 32 sinaticosa=cos(a)+isin(カーム) 0≦a≦のとき,nus であるから、求め る極形式は sinaticosa=cos π <α <2のとき 2 うか確認する。 cos(1-0)=sino sin(-)-cos 0 D 2 10≦x<2πから -as. ゆえに、αの値の範囲に (-a)+isin(-a)+ 180 よって場合分け。 5-2 232 V <<2のとき、偏 TC -a<0 2 π (各辺に2を加えると, --α<2であり 2 cos(-a)-cos(-a). 5 0 2 COS 2 sin(-)-sin(27) 10)805) 2sin(+2nx)=sin◆ 角が0以上 2 未満の範 囲に含まれていないから、 偏角に2を加えて調整 する。 なお cos( +2nx)=cos よって、 求める極形式は sina+icos a=cos(-a)+isin(-a) [n は整数 ] so 次の複素数を極形式で表せ。ただし、偏角0は002とする。求めよ。

JがどうしてダメでLがどうしていいのか、教えて欲しいです🙇🏻‍♀️

ⅣV 次のA~Lに示された1と2の英文の組み合わせのうち,1の文で説明されている 内容から判断して2の文の内容が妥当と考えられるものを4つだけ選び,その記号を ・マークしなさい。 例を参照のこと。 (12点) (例) 1: I'm 18 years old and Takeshi is 10 years old. 2:I'm much older than Takeshi. (妥当)/I'm a little younger than Takeshi. (誤っている) ムズイ ※ 1:Even after asking for directions, the hotel was hardly easy for me to find. 逆 2:Once someone had told me how to get there, I was able to find the hotel without difficulty. D. 1: It was a shame I couldn't afford to buy the watch I wanted.: 2:The watch that I bought was not worth the money I paid for it. かってない 1~用に C. 1:The waiter left the menu on the table in case the man changed his mind about not ordering another dish) 2:Although the man said he didn't want another dish, the waiter left him with the menu just in case. D1 : We'd better hurry if we (still) want to catch the 9 am train. 2 : Even if we rush, we won't be on time for the train at 9 am. 集中 1:If I had concentrated more, I could have passed that exam easily. 2:The exam was so easy (for me to pass that I did not even have to me to concentrate.

合ってるか見てほしいです！ 1は教えてほしいです💦

Writing_ 最頻出の項目を、 もう一度チェックしよう。 各文の間違っている部分を直し、 全文を書きなさい。 □ 1. The number of people who were ③injured in the accident ④ were very small. (佛教大) 2. The package that was to be ② delivered yesterday have not yet arrived. ( 広島経済大 ) The package that was to be delivered yesterday had not yet attived.

合ってるか見てほしいです！

☐ 1. The number of students in the French class ( ①is 2 are 3 have ) limited to thirty. () 4④has 2. A number of students ( ⑪have 2 are ) come to the event. has (亜細亜大) ④were 3. Both of my brothers ( ) married. Dis Par are was (芝浦工業大) ④be 4. Either my boss or I ( Dis ) supposed to attend the meeting next month. ②2 am ③ are will ( 東京電機大) ☐ 5. Neither Tina nor I ( ) to blame. Dam ②is ③ are ( 東京工芸大) ④can is 6. Not only you but also your wife ( ) invited to the company's event. ⑪were 2 are ③3 be 主語と動詞 (國學院大)

合ってるか見てほしいです💧 また、154と157は間違ってるところを探して直すところだと思うのですが、わからないので教えてほしいです🙇‍♀️

第 17 章 ・動詞 あ 例題 154 The number of drug-related crimes are increasing yearly. 155 Both Sophia and I ( ) disappointed by your behavior. ①are Dam 2am ③is ④be 156 Neither Emma nor I ( Lis am ) able to attend the event. ③ are ④have 157 A woman with two babies in her arms are sitting on the bench. [誤文指摘]

仮定法についての質問です。 もし私が熱心に勉強を続けていたのならば、私は今別の大学に行っているだろう。 を、仮定法を使って表現する際は、 If I had had been studying hard, I would have belong to an another ... 続きを読む

問2のイについてです 2枚目の写真が私の答えなのですが、3枚目の解答とはちがっていて....これでも丸もらえますか？？

2.日本語に合うように()内の語句を並びかえ、英語で答えなさい。 ただし文頭に来る語も小文字にしてある。 (2点×4) (1) 私たちが去年聞いた合唱はとてもわくわくさせました。 The chorus (we / heard / was / last year / thát ) very exciting. (2) 戦争がないといいのになあ。 (3) 丸岡には約450年前に建てられた城があります。 (4) もし私があなたなら、先生の話を聞くのに。 I ( there / no / wish / wars / wére). Maruoka has (castle/d/bullt/ was / thaf) about 450 years ago. (were / if / you/I), I would ask the teacher. 3.次の英文は、 丸岡中学校英語科の先生方から卒業生のみなさんへの手紙の前半部分です。英文を読んで、あとの問いに答えなさい。 Hi, everyone. You are going to leave Maruoka J.H.S soon. You've been ( ① ) English hard for three years. We think that these three years are so precious, but also ( ② ) for all of you. Because of the emergency of COVID-19, you had to follow rules that made your lives tough. We want you all to enjoy your happy lives in the future. Here is some (③) through a person's life that you've ( 4 ) about in English and Japanese classes. His name is Hoshino Michio, a great Japanese photographer. Last year, the exhibition of Michio Hoshino was held in the Fukui City Art Museum. In Fukui, students use a textbook called “New Horizon", and the story of Michio has been told for about 20 years in this book. Besides, it was the 70th anniversary of his death. Many people remembered or learned about him through the exhibition. Michio was attracted by a photograph of the wilderness of Aldiskd. He decided to visit there and learned the skill of living without city conveniences. He loved the Inuit people and animals there. They also loved Michio. He also loved the nature there that was beautiful and severe. He said, “I love this place. It's cold here, so we go negy each other and talk about our lives. It makes our bodies warm. It makes our hearts warm, too. Because the weather is severe, people try to help each other, and become even better friends." His words give some hint to realize what a happy life is. Through the severe weather, he experienced both a tough and argreat life that satisfied him. (大問4に続きます) 注) anniversary 記念日 ~周年 hint ヒント 問(1) 本文中の(1)~(4)に入る最も適切なものを、下から選び、答えなさい。 (知・技点×4) 【 learned studying. hard advice 】 問(2) 次の質問に対し、 2語以上の英語で答えなさい。 (知・技 2点×2) ア How long has Michio's story been told in the textbook “New Horizon" ? イ What was Michio attracted by?

(１)と（２）を全文並べがて欲しいです ちなみに答えは（1）3番目③ 6番目⑥ （２）3番目⑤6番目⑥

[1] 次の英文の文脈に適合するように下線部(1)~(5)の [ 内の語(句)を並べ替える き,それぞれ3番目と6番目にくるものを選び, その番号をマークせよ。 As shown by the recent trend of jimikon (simple weddings), more and more couples are [ avoiding ② ceremonies money. 6 6 to 7 wedding] ち 103 aims to reverse that. ③ elaborate ④ holding ⑤ save The VR (virtual reality) software a 24. Ateam is a Japanese smartphone games developer. Its app, named Sugukon VR, combining sugu (soon) with kon from kekkon (marriage), is used with headphones and goggles that people slip their smartphones into. It is unique because the videos are taken from the perspectives of both bride and groom. Other attempts at VR software merely imposed clients' images on magazine ads for wedding locations, but Ateam tried hard to make the experience more realistic by advancing to videos and audio. groom The video responds to one's movements. For example, with the goggles on, the can turn to see his bride in all her finery. If he then swings back, he sees the wedding guests. Couples can also use the software to check out wedding locations at hotel resorts 3 of 4 out ⑤ the expense ⑥ them overseas (2) avoid ②:: checking =4 160 person. Ateam's app uses the technology it developed for a horse racing game (3) [① from V+ 2 lets 3 players (4) race 2 0 to] in T⑤ that ⑥ the ⑦view] the point of view of a jockey. It 5 3. is a response to the fact that fewer engaged couples are holding elaborate ceremonies. According to a survey, approximately 670,000 couples get married every year but around 300,000 stop short of holding a wedding ceremony. This means (4)[①are ③ fewer 4 for for 2 2 chances 4 there ①to ⑦7 young people] attend weddings. The number of there people who do not know what to do in a wedding is increasing. A staff member at Ateam said, "By using VR technology, we can create a system so that (5) and 2 away 5 ✓perie ③ cannot ④_far ⑤ live 4 2 T⑥: relatives: :: ::⑦::K_who_ attend the wedding will still be able to experience it." Ateam will film different wedding locations in V₁ 0 Japan and other countries and allow clients to virtually experience them at their customer service counters. STEM

自由英作文の添削をどなたかにして頂きたいです！🙇🏻‍♀️ 【 】の部分になります！ 〈問題〉（2024北九州市立 総合問題 前期）大問II 日記はどんなふうに書いてもOKだ。1️⃣【ちょっと書いて気に入らなかったら、ちがうものをかけばよい。】書き直しもできる。 （中略）... 続きを読む

I was very ( ) of my poor pronunciation. の回答はconscious だったのですが、embarrassedが入らない理由は何でしょうか。（選択肢にあったので） どなたかお願いします🙇‍♀️

1 advise 2 meet 3 protect 2 m warn 1377 A: You gave a very good speech at the Japanese speech contest. <東海大 > B: Thanks, but actually I was very ( ) of my poor pronunciation. ①proud 2 embarrassed ③ convinced ④conscious 同〈北海学園大〉 1 11/ \ to strong sunlight may cause skin cancer. Er