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数学 高校生

指針からよく分かりません。なぜS2nとS2n-1の極限を調べれば答えが出てくるのか分かりません。SnとしてもSn=2/3-(2n+2)/(2n+3)になるのでは?

補 無限級数の種々の問題 発展問題 例題20 次の無限級数の収束、発散について調べ, 収束する場合は,その和を 求めよ。 指針 Gar ゆえに・ 2 4 3 注意 lim d2n-1=lim n=1n 2 3 したがって, 無限級数は 2n new 2n+1 この無限級数の部分和Snを1つの式で表すことは難しい。 ここでは,まずS2, S2 の極限をそれぞれ調べる。 ともに同じ値αに収束するなら和はα, それ以外な ら発散である。 T a+b+ax+b2+......+an+b+....…を機械的に(a1+a2+......)+(5+62+……...) としてはいけない。 第n項までの部分和をSとする。 2 4 6 6 S2 = 1²/31 - 01/14 + 1/13 - 09/10 +0 09/10 S2n= 5 5 7 7 5 を示せ。 S2n-1=S2n-(-2n+2) = ²/3 2 2 lim S2n=lim -lim (²2-22+3)=-1 n→∞ 2n lim S2n-1 n→∞ 3- 5 7 + 2 + 5 5 - -=1 となり, -1 は0に収束しないから α も0に 1 n 収束しない。したがって, 与えられた無限級数は発散する。 3 4 6 6 8 + 7 7 -=lim n→∞ 1 4 + 9 225 次の無限級数の収束 発散について調べ, 収束する場合は、その和を求めよ。 (1) 1+1/+1/+1 2 3 + + 3 発散する。 答 2 1 2+ ·+... 1 8 9 4 +......+ +......+ 第1節 数列の極限 59・ 1 3n-1 2n 2n+2 2n+1 2n+3 2n 2n+1- 2n+3=/1/2-2n+3 + 2n+1 n 1 2" ·+· 2n+3 n+1 ****** は正の無限大に発散する。 このことを用いて, 2 00 1 +..... が発散すること

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英語 中学生

この問題の②③④のやり方を知りたいです! ちなみに答えは ②イ③rich④ウ、オ、イ、エ、ア です!少し多いですがよろしくお願いします🙇🏻‍♀️

次の英文を読んで、あとの問いに答えなさい。 Many years ago, traveling was slow and difficult. If you traveled to foreign countries, you usually had to spend many weeks or months away from home. For this reason, you usually had to be rich. Today, air travel has changed everything. the world with short holidays. also become ( 2 to fly in fine planes and stay in good hotels. Traveling by air is easy and fast, and so people can go around Traveling has become easier, faster, and it has )*cheaper. Today you do not need to be ( 3 ) Why do we want to travel? What do we want to do when we go to foreign countries? If you are *adventurous, you can do almost everything. You can climb mountains, you can stay in a tent, you can ride an Xelephant, or go under water to watch fish. But many of us are not so adventurous. When we go on 7:usual lives 1 : from something I: our holiday, we just want 4 different ). We want to see different things around us, we want to see different people and eat different food. Today more and more people travel around the world. Every year, there are new places to visit. Perhaps we will soon be able to buy a ticket to the moon. (注) cheap 安い perhaps ひょっとしたら adventurous 冒険好きな ① 下線部①を日本語に直しなさい。 7: very No.3 ④ 下線部④の( elephant )に当てはまる適語をア~エより記号で選びなさい。 1: much : more I: most )に当てはまる語を、本文中から語抜き出して書きなさい。 )内の語句を正しく並び替え、 その順番を記号で書きなさい。

未解決 回答数: 1
英語 高校生

答え合わせしたいため、わかる方解答教えてください🙇🏻

4 □001 基本 002 基本 005 [基本] 基本 003 009 010 004 008 [基本] 次の英文の( )に入る最も適当な語(句)を1つずつ選び, 番号で答えなさい。 I had a fight with Jun and now we ( ) to each other. aren't speaking 3 aren't to speak Day 1 月 月 日 解答時間( 解答時間( 日 動詞と文のかたちに関する問題 ① The secretary told me that Mr. Jenkins ( 1 goes 3 have been 3 is finished 5 will have been finished ☐007 I would rather walk than ( 904 take 3 took I am not sure if she ( 1 go 3 will go The new building ( ) by the time you graduate in 2015. 1 finishes 2 has finished 4 will finish I'm sorry, sir, but smoking is not ( ℗ permitted 03 permitting 2 aren't spoken 4 weren't speaking 006 The time of day just after sunset and just before night ( is call 基本 2 called 3 is called had seen 2 had gone 4 is being ) to Sri Lanka for study after graduation. 2 visiting 4 will visit U3 saw ) a bus. ) in this building. 2 permission (4 permit Kevin is such a diligent student that he ( 1 must have received 03 don't need to receive ) out to lunch and wouldn't be back until two. 2 had taken 4 to take Jane was very pale. She looked as if she ( A: Are you going home to your family for the New Year's holiday? B: I wish I ( 1 can ). But I have to stay in the city and work. 2 could 3 go 4 will ) such a low grade. 2 should be able to receive 4 can't have received ) dusk. 4 call 2 is seeing 4 seen ) $ ( 分( ) a ghost. WILURES 04 NA BA sa aa 122103 /40) 点 /40) 点 E VIGO < 慶應義塾大 > <獨協大> <東京医科大〉 <関西学院大 > 〈 南山大〉 LIQ <熊本県立大〉 SAYA <京都女子大> <高知大) <学習院大 > 2018-ANSHROO HAABERSTAR (***) STAATENSESBEST ☐011 012 □013 基本 030 □014 ** 015 □017 ☐019 020 But for the actions of a brave firefighter, I () alive now.vil(sets inter hor 1 am stulbomuni 2 hadn't been qu woda 4 wouldn't be 3 will be bib @ <日本大〉 blooda □ 021 ( ) that dinner would be served at the conference, I would not have eaten sandwiches on the way. If British shovic and uplol nirmolof werbe Taking/her 300l 2 1 If I know 3 If I were to know 2 Had I known 4 Should I know The population of that country is (ows) that of our country.daun ( 1 as large as three times 2 as large three times as 3 as three times large as 4 three times as large as Vintage For my taste, this soup needs to be a bit() salty. 1 as 2 few 3 many 5 less 4 than I quit my job two months ago. It was the () mistake I've ever made.az badedant gnitiew, wade 2 impossible sold moloca en 3 probable/ had/ offer/ for / 4 worst eneroun / it), we could not have edi galybusdam es basqa bloode uoy deiland wo 016 io al I'm not sure how long ( ) to deliver this washing machine. og 25 gumal 1 do you take 2 for taking you si 3 does it taken asuiaud beaed-sm4 it will take om at malam commo レアはアフリカの4倍を超える量のダイヤモンドを I cannot believe it. He would be the (ore) man to take bribes.es) diamonds prooed in impossible bstinu sdi ni ylio 2 least moose alalaittoyob tsdW eso 3 hardest 4 last aduni wilgo va huraueano el a mairg lo mlbite 008 ghean jadi seluug oe al mus guiad □ 018 I realized that my family was in danger, and ( ). 1 so I was 〈上智大 > DED 2 so did I ④ so I did 3 so was I mi法政大 distine sdt at gaib wzĀJA that noite):8(**) I will work next Saturday (S) necessary.w 1 by Jis 2 if a l'abinow 3 soabam ) IIA (d) Tradisi 2 (a) ( <大阪教育大 > <玉川大〉 ASO < 桜美林大 > SOJEN VECTOIS003CTOXX E It was ( ) we found the antique silver spoons. 1 what in Paris 2 in Paris that 3 in Paris which Shi aslil noy of 4 Paris in where of bovom og bed 900 bio siti (esmit lossis svubli 18 ② 次の各組の英文の( ) に共通して入る最も適当な語を1つずつ選び, 番号で答えなさい。 (a) He ( ) have missed his train. (b) Business has been thriving in the past year. Long (l) it continue to do so! 1 should 2 shall 3 might 4 may TEO <甲南大 > TEO 〈上智大〉 Aviator 600 Level 5

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英語 高校生

教えください

2. 次の各組の文がほぼ同じ意味になるように,( )に適当な1語を入れなさい . (1) He bought a car, but sold it after a month. He sold the car which he ( It is ten years since we moved to this town. (2) ) ( ) ( (3) (4) since we moved to this town.no Mother began to look for her purse an hour ago and she is still looking for it. Mother( my) for her purse ) ( ) an hour. I said to myself, “Who left the window open ?" I wondered( )( ) (Bonap a month ( 3. 次の日本語に合うように、[ ]内の語句を並べかえなさい. (1) 僕は今までにそんな大きなチョウを見たことがありません. I [ such / seen / big/ have / a/ never] butterfly. I (2) 科学者たちは太陽は50億年輝き続けてきたと言う. Scientists say [for / been/ has / the sun / five billion years / shining ]. Scientists say (3) カオリは自分のしたことを決して後悔しなかった. Kaori [what / never / she / done / regretted/had ] . Kaori 66 the window open. (4) 次のクリスマスが来ると、 僕は2年間ずっと東京に住んでいたことになる. When next Christmas [lived/comes/I/ have / in Tokyo / will/] for two years. When next Christmas 4. 次の日本語に合うように、英文を完成させなさい (1) 父は今朝からずっと新聞を読んでいる. My father (2) 「君と彼とは何年前から友だちですか」 「5年前からです」 WI ). 99 CHINTS (3) 祖母が亡くなって10年になります。 My grandmother (4) 私は次の土曜日までに研究レポートを完成しているでしょう。 my research paper butterfly. for two year this morni with hir ten y 1 (1) 「新聞」 the newspaper (2) 「何年前から」 「どのくらいの間」 「5年前から」 「5年間」 える と友だちである」 be friends with (3) 〈状態の継続〉 を使って答える,

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