sin(2θ+α)と突然でてきたαは何者ですか？ どこから来たものですか？

・裏 日本 例題 140 x,yが2x2+3y^=1 CHART & THINKING 2次曲線上の点における式の値の最大・最小 2次曲線上の点は媒介変数表示が有効 が満たす方程式は、 楕円を表すことに着目。→点(x,y) は楕円上を動くことがわか 11 H x, y, 媒介変数の利用 (最大・最小) を満たす実数のとき, x²-y2+xy の最大値を求めよ。 [早稲田大〕 p.506 基本事項 2 る。 前ページの基本例題139 と同様, 媒介変数表示を利用すると, x,yはどのように表され るだろうか? ONDI それをx-y2+xy に代入して得られる三角関数の式について最大値を求めよう。 三角関数 の合成を用いることに注意。 楕円 2x2 +3y2=1 上の点 (x,y) は x 1/12 cose, y=1/13 sino (09/2 √3 00 と表されるから x² - y² + 1 xy=(√2 coso) - (√3 sino)" + √2 cosesin ・cos √√2 sino √3 =1/12/cos²d-11/3 sino+ ・cos2. 12 CP 0 = 1.1+cos 20 12 √31 12 2 22 08 √6. Deg - sin 20+ cos29+12 12 ただし sina= 0≦0<2πであるから よって ゆえに, 求める最大値は 5 12 9 1 to sino cose 6 11-cos20 3 sin (20+a)+ 1 12 baing)=(beo -1≦sin (20+α)≦1 -+ 2√6 CHOO sin 20 x² + 1² √31+1b98=(1+08) 200+0200 12_ @uia&=(x+16) 3 cos²0=- ·* sin²0= 1−cos 20 2 1+cos 20 2 5 √√6 cos a = √31 (mia √31 102 €) 70 D()=²38+ (3) a≤20+a<4π+a+88) 800)=P 1 円 bsingssinocos0=- =1/12 sin20 actio √6 sin 20+5 cos 20 +68=65+4)==√6+25 sin (20+ a) -例えば,20+α=1のと π a き,すなわち = 448-01/27 のとき最大となる。 513 4章 15 媒介変数表示

(1)で整理するとx(x²-x+y²)=0になっていますがせいりしてこれになりません。 x=1/1+(y/x)² の変形を教えてください

tは媒介変数とする。 次の式で表される図形はどのような曲線 4t 1 t (1) x=₁+²²³₁ y=1 +²³² 1+2, agt ** 10 $ (2) x= 1-t² 1+t², y= astp. 506 4 基本 A-0 1+

themが何を指しているのかわからないのでどなたか教えてください🙏またItが指しているのはa different kind of recyclingであっているでしょうか？

After they read the opinion article, Aoi explains reuse and recycling in Japan to Eric. I think Japan is still a country of mottainai. It is true that some people throw away usable things, but others try to reuse or recycle them. How do they reuse items? Some of my friends buy and sell used books and clothes on the Internet. Also, some apparel makers collect used clothes and send them to refugee camps across the world. Reusing something, I always feel the spirit of mottainai. As well as reusing some items, we try to recycle others. Many cities and towns have strict rules for separating garbage. Used plastic bottles, for example, are made into various new goods. These days, moreover, I hear a different kind of recycling has become popular. It is called upcycling. 10

④の答えは1のanotherですがなぜ②のotherではダメなのですか？

ja warrior Sasuke サスケ (番組名) es, rock パルク ルクール as tog Casiqui fassi hlí tažadve) tribalo climbing, and other things. Experts say that [1 when 02 while 3 as o 46 though] we are all different, one sport may fit one personality or body type better than [1 another 2 other 3 the other 154 one another ]. om smosed lineser eed ein W bebbs 2 One shy girl in America used to enjoy soccer, but she started to have trouble understanding her toommoto thon thorr tollrad only about winning At nga 9

添削お願いします！ 問題文⬇️ Is it important to attend university? Why or why not?

Revising I think Is it important to attend university? Why or why not? Write a 60-90-word essay. 100 attend university Word Count: very fun and it is important reasons for my opinion. First, students can make a lot of friends at university. Studying with their friends is very good chance. to gain ability to students. communicate with people. Because there are many from various place at university, They can gain knowledge of various culture. + Se cond major in. in is Career For these reasons. To ・ 102 I have students can. study subjects which they want to I think that studying things which I am interestedt university makes student? studying at Also, decides their lives. I think people go to university. Two people should

英作文なんですけど、添削をお願いしたいです🙌🏻学校の先生にしてもらう時間がなくて明日テストなんです！お願いします🙇🏻‍♀️💭(字汚くてすいません)

次のTopic について、自分の意見とその理由を50 語程度の英文で書きなさい。 Topic :If you had an "Anywhere Door", where would you go? Topic 2: If you could travel in a time machine, when would you go to? Topic 3: Do you think more people will have pets in the future? 55 ☺ If I could travel in a time machine, I want to go to Heian Period. I have two reasons. First. I can watch Helankya. Sei Shenagon and Murasaki Shikibu. I like their essay. so I want to talk with them. For this reason. I want to go to Helan Period 54歳 0 If I had an Second. I want to meet "Anywhere Door", I want to go to Shizuoka. I have two reasons. First I want to eat Local gourment food like Fuzimiya-yakicabo, Second I want to watch the volley match of Hamamatushugakusha high school. But I haven't enough many to ge So I want to go to Shizuoka with anywhere door. ☺ I think more people will have pets in the future. It's because having And having pets make children's pets is good for education. emotions enriching. Also, pet helps relieve children's loneliness. So I think more people will have pete in the future Check! □自分の意見や考えを最初に述べているか。 □その理由を述べているか 理由に対する具体的な事例・事実を述べているか ( つなぎ言葉を効果的に使っているか。 □単語・文法の誤りはないか。 ) words

解説お願いします。 おじは死の直前まで病気になることはめったになかった。(倒置を使って) Seldom did my uncle get sick just before he died. 倒置をしない元の文を教えて頂きたいです。

この問題の解答をどなたか教えていただけませんか？

3 各組の英文がほぼ同じ意味になるように,( )に適切な語を入れなさい。 (1) (a) Mt. Everest is the highest mountain in the world. ) than ( (b) Mt. Everest is ( (2) (a) That city was the hottest in Japan yesterday. (b) ( ) ( ) city in Japan (3) (a) Taro runs fastest in this school. (b) ( No (4) (a) I believe love is the most precious thing of all. (b) I believe ( ) is more precious than love. (c) I believe love is more precious than ( was was ( of on finals (d) ) else. riora on arm bleg all, tel ) mountain in the world. 3750 (1) ) than that city yesterday. ) other student in this school runs as (fost )( as ) Taro.

ここの3問の答えを教えていただきたいです。

CHALLENGE 1は ( 発展を選び、正しく直しなさい。 )内の語句を正しく並べ替えなさい。 2,3は誤りのある箇所 □□ 1 地球温暖化といった環境問題は,我々の生活に直接影響しうる。 (our lives/environmental issues / affect / can/global warming/directly/ such as / effect). [1語不要〕 (中央大) □□ 2 I've come to think that buying in bulk is more ② economic than shopping for small quantities. ( 青山学院大 ) 誤りのある個所 誤りのある個所 正しい形 □ 3 His boss Das well as his coworkers has ② put trust in him as he has been industrial in his work. (名古屋外国語大) 正しい形

(2)で、積分定数をC1とおいて1+C1をCにしていますが、理解できません。C1とCは別物なんですか？C1+1はなぜCになるのですか？

3x √ (e ² + 1)² dx >0 €