この部分の分母はなぜ3ⁿ⁺¹にならないのですか？

10次の条件によって定められる数列 {a,}の一般項を,[ ]で示したおき換えを利用すること により求めよ。 an (1) a;=6, a,+1=6a, +3*+1 b6, 3" n (3) a」=1, a#+! =24,+n-1 [bォ=4n+1-Q] 1 (4) a = an+1= b ニ n 2 2a,+3 an (解説) an+1 an (1) am+1=6a,+3"+1 の両辺を3*+1で割ると =2. 3"+1 3" an b% とおくと 3" bn+1=26,+1 の ニ 20 また あ===2 6 3 3 のを変形すると bn+1+1=D2(b, +1) また b,+1=3 よって,数列 ({b+1} は, 初項3,公比2の等比数列であるから b,+1=3-2*-1 すなわち b,=3-2*-1_1 したがって a,=3".b,=3"(3-2"-1_1)

【数Ｂ数列】 １枚目の画像の問題で２枚目の画像にあるような解き方はしないのはなぜでしょう？ このような解法では手間がかかるからでしょうか？

Q:初項的第し環まみの和 Sn tha. Su-nt2z表る Son3a一般項を求めよ。

ここ答えcameが入るのですが、becameはどうしてダメなのですか❔

Walt borrowed money and looked for a place to build a park. He finally found a large place with orange trees in Anaheim, California. One day, Walt took his brother, Roy, to the place. "We'll call it Disneyland," said Walt. “It will be a Magic Kingdom and everyone, young and old, will have fun there." “Well make four lands there," Walt said. “There will bea street between those lands and there will be many little shops along the street. We call it Main Street, U.S.A. Now how do you like that ?" 「Well, of course I like it," said Roy. “Well, we'll have a train that runs all around our Magic Kingdom," Walt said. "Sleeping Beauty Castle will be in the center of our kingdom. That will be the symbol of Disneyland." On July 17, 1955, Walt's dream ( A) ) true. Disneyland opened in Anaheim, California, and Walt said, "It will keep growing bigger if there is imagination in the world." Even today Disneyland is still growing bigger and bigger. Disneyland welcomes all the people. Millions of people have come to Disneyland. Everyone can forget all the things to worry about in their daily life and have a wonderful time in this amusement park. They can do almost anything there by sing

お願いします＜(_ _)＞

3 次の(1),(2)の問いに答えなさい。 (1) 次は、中学生の優(Masaru) が, 海外で自己紹介 (self-introduction) したときの体験につ いて書いた文章です。 これを読んで, ①, ②の問いに対する答えを,それぞれ主語と動詞 を含む英文1文で書きなさい。 Last year, I had a chance to visit our *sister school in America. At that time, I *introduced myself there. At first, I tried to *memorize everything. But it was too difficult because there were many things to memorize. So, I wrote some important points on a piece of paper. I looked at it while I was speaking. *As a result, I did my self-introduction well. In my self-introduction, I introduced myself and Japanese things like sushi, manga and judo to the students in the class. I was surprised that they knew well about the things I introduced. After my self-introduction, they asked many questions about me and Japan. I was really happy. It was a good experience for me. 【注】*sister school:姉妹校 *introduce:紹介する *memorize:暗記する *as a result :結果として 0 What did Masaru do for his self-introduction after he tried to memorize it? 2 Why was Masaru surprised when he did his self-introduction? (2) 優は,姉妹校の生徒と交流しているときに,ある生徒から次のような質問を受けました。 あなたが優なら,質問に対してどのように答えますか。《条件>にしたがって, 英文で書 きなさい。 I want to know what is popular among students in Japan. Please tell me one of the popular things in your school. <条件》·文の数は問わないが, 15語以上25語以内の英語で書くこと。 * 符号(,.?!など)は語数に含めない。

お願いします

3 次の(1),(2)の問いに答えなさい。 (1) 次は,中学生の優(Masaru)が,海外で自己紹介(self-introduction) したときの体験につ いて書いた文章です。 これを読んで, ①, ②の問いに対する答えを,それぞれ主語と動詞 を含む英文1文で書きなさい。 Last year, I had a chance to visit our *sister school in America. At that time, I *introduced myself there. At first, I tried to *memorize everything. But it was too difficult because there were many things to memorize. So, I wrote some important points on a piece of paper. I looked at it while I was speaking. “As a result, I did my self-introduction well. In my self-introduction, I introduced myself and Japanese things like sushi, manga and judo to the students in the class. I was surprised that they knew well about the things I introduced. After y self-introduction, they asked many questions about me and Japan. I was really happy. It was a good experience for me. bas (sl 【注】*sister school: 姉妹校 *introduce:紹介する *memorize:暗記する *as a result :結果として 0 What did Masaru do for his self-introduction after he tried to memorize it? 2 Why was Masaru surprised when he did his self-introduction? (2) 優は,姉妹校の生徒と交流しているときに, ある生徒から次のような質問を受けました。 あなたが優なら,質問に対してどのように答えますか。 <条件》にしたがって, 英文で書 きなさい。 I want to know what is popular among students in Japan. Please tell me one of the popular things in your school <条件>文の数は問わないが, 15語以上25語以内の英語で書くこと。 ·符号(,.?!など)は語数に含めない。

sin60゜は √3/2 だけど、sin50゜という分数で表せない角度が出てきた場合、どちらの角度も小数で表して計算するのですか？教えていただきたいです🙇‍♂️

1 (1) A=30°, B=120°, a=V3 のとき,b (2) a=V2, b=2, B=45° のとき,A Anie 例題 63 dD eい 181 図のような川で, 岸の2地点 B, Cから, 対岸の地点Aとのなす角度をそれぞれ測 ると,ZABC=70°, ZACB=50°であっ た。BC=30mのとき, 三角比の表を用い 70° 50% C て, 次のものを小数第1位まで求めよ。 (1) 2点A, B間の距離 (2) 川幅 AH の長さ BH -30m 1:000 -S8- ●次の△ABCにおいて, 次のものを求めよ。 [182~183] 182 (1) 6=3, c=5, A=120°のとき, a (2) a=4, c=2/2, A=45° のとき, b

下線部のandが結ぶかたまりがbe quite~とnot speak ~だと思ったのですが、回答が違いました。理由が知りたいです。

次の英文を読んで、下記の問いに答えなさい。 Everyone knows what is supposed to happen when two English people who have never met before come face to face ina train-they start talking about the weather. In some cases this may simply be because they happen to find the subject interesting. Most people, though, are not particularly interested in analyses of climatic conditions, so there must be other reasons for conversations of this kind. ,One explanation is that it can often be quite embarrassing to be alone in the company of someone you are not acquainted with and not speak to them. If no conversation takes place the atmosphere can become rather , strained. However, by talking to the other person about some neutral topic like the weather, it is possible to strike up a relationship without actually having to say very much. Train conversations of this kind-and they do happen, although not of course as often as the popular myth supposes-are a good example of the sort of important social function that is often fulfilled by language. Language is not simply a means of communicating information-about the weather or any other subject. It is also a very important means of establishing and maintaining relationships with other people. Probably the most important thing about the conversation between our two English people is not the words they are using, but the fact that they are talking at all.

②の問題で、答えはこれなのですが後ろにthereを付けてしまったのですが、、 だめでしょうか？

r. MurakI:Ihere are severai vpili011s avvut uiuu old Japanese. Osaka is famous for fish. Mami:So Naniwa means "Fish Garden"! That(c) - Muraki : You're right. Ill tell you another interesting thing about Osaka and fish. Mami, I think you learned about the Kojiki in history class. Mami:Yes, I did. It's an old history b0ok which was written in the Nara Period. Paul:The Nara Period That was about 1,300 years ago. Muraki:Oh, you know about Japanese history very well, Paul. The Kojiki says Osaka Bay was called “the Sea of Chinu" at that time. Paul That's the name of the fish I got. Muraki : Yes. In those days, there were a lot of chinu, so people called the sea by that name. Mami:Mr. Muraki, I learned a lot about Osaka Bay today. Now I hope fish from Osaka Bay will be more popular in Japan. uraki : Me, to0, and I believe they will. People in Osaka are working hard for that. Paul:That's nice. But please don't catch too many fish because I want to go fishing. Mami:Oh, Paul!

英作文を見てほしいです(答え付き

d 10t. Bye. UDm Amy: Bye. nottoM yau.d ed ogorg tao. 2apicce nonoM aM 0 poomA bolla si al lood edt baut oved ow alnida sW 〈テーマのある自由作文》 91 次の(1)~(3)の問いに答えなさい。 bas 1) あなたが好きな季節は何か。 その理由も含めて25語程度の英語で書きなさい。ただし, 2文また は3文で書き, コンマやピリオドなどは語数に含めないこと。 (奈良県) My tavorite season is Summer because I Can go swimming in sea and So I Can e njoy Summe yOcation. Ican eatwater melbns D あなたは, 高校入学後に何を一番したいですか。 その理由とともに30語程度の英語で書きなさい。 (愛知·東海高) )内に書きなさい。 ants, "Wh 最後に使用した語数を算用数字で( words

教えていただけると嬉しいです🙇‍♀️

3次の文の に適する語を から選んで書きなさい。 2点×6[12点) (1) A simple idea sometimes has the to change the world. (2) Collecting wood is work. (3) The facilities Cost a lot. (4) Using a lot of energy to global warming. (5) We can use a solar cooker even a disaster. ; you use a solar cooker, you can save a lot of wood. adds after hard if often power [4 よく出るこ次の各組の文がほぼ同じ内容になるように に適する語を書きなさい。 There is no electricity in that small town. 4点×2[8点) electricity in that small town. Ms. Brown likes Japanese food, like sukiyaki, tempura, and takoyaki. There is (2){ Ms. Brown likes Japanese food, sukiyaki, tempura, 、and takoyaki.