なんで'しかざるなり'じゃなくて'しかざるなりと'ってなるんですか？

音 ラン 日、「十室 之邑、必有忠 之好學也。」 きゅう ○子･･･ここでは「孔子｣の意〇丘孔子の名前 子し CHAPTER1 10の〝いがよみ"公式『比較』の公式 ごとキ 信如丘者焉。不゛如丘 〈南山大・文〉

黄チャートの解説全く分かりません。 青チャート持っている人この問題の解説見せてください。 青チャートだとBの129番になります。

502 基本例題 108S" を含む漸化式 数列{an} において,初項から第n項までの和Snとan の間に、 Sn=-2an-2n +5 の関係があるとき (1) 初項 α1 を求めよ。 (3) 数列 {an}の一般項を求めよ。 CHART O OLUTION 和Snを含む漸化式 解答 (1) Si=α であるから, Sn=-2an-2n+5 n=1 とすると a=-2a-2・1+5 よって (2) ①から ゆえに ②① から ① S+1-Sn=an+1 であるから よって Sn+1 -Sn=an+1, Si = α」 を利用 (2) S=-2a-2n+5 でんの代わりにn+1とおいて, Sn+1 を求め, Sn+1- Sn=an+1 を利用する。 この等式は, n ≧1で成り立つ。 a₁ =1 an = 30 PRACTICE 20 Sn+1=-2an+1-2(n+1)+5 Sn+1-Sn=-2an+1+2an-2 (2) aman+1の2項間の関係式を求めよ [類 皇學館大] an+1=-2an+1+2an-2 2 an+1= man 3 2 \n-1 ...... (3) an+1=- 41=21234-1/23 を変形して 30 -an また a1+2=1+2=3 よって,数列{a,+2} は,初項3,公比 1/ の等比数列である。 2n-1 ゆえに an+2=30 -2 anだけ求める問題は G-Satを利用 ① において an+1+2=1/12 (an+2) 3 It ne ■①のnn+1を代入 -44-1 n≧1 で成り立つ。 12 ta= -α- α=-2 2 を解くと 基

数列 この問題ってn≧2の時って途中で書かなくて良いのですか？

基本 例題129 和 S と漸化式 087 数列{an}の初項から第n項までの和Snが, 一般項anを用いて |Sn=-2a-2n+5 と表されるとき,一般項an をnで表せ。 n a=Si n≧2のときan = Sn-Sn-1 指針▷ an と Sn の関係式が与えられているから, まず 一方だけで表すために を利用する。ここでは, n=2とn=1の場合分けをしなくて済むように,漸化式 S,=-2a-2n+5でnの代わりにn+1とおいてS+1 を含む式を作り,辺々を引くこと によって S を消去する。手順をまとめると ① α=S1 を利用し,α を求める。 2 an+1=Sn+1-Sn 4³5, an, an+1 Dl£÷1F3. Sn+₁ = a₁ + a₂+...+an+an+1) CHARTD >*E* (−) Sn =a₁+a₂+ +an Sn+1−Sn= an+1 an, an+1 の漸化式から,一般項an を求める。 ( 解答 Sn=-2an-2n+5 ① とする｡ ① に n=1 を代入すると S₁=−2a₁−2+5 S=α であるから a=-2a-2+5 よって ①から ②① から BASOFT したがって a=1 Sn+1=-2an+1−2(n+1)+5 Sn+1-Sn=-2(an+1−an) -2 BAL □ Sn+1 -Sn=an+1 であるから よって ht=2 3 ゆえに ここで a+2=1+2=3 数列{a,+2} は初項3,公比 1/3の等比数 FR an an+1+2= an+1=-2(an+1−a) -2 Statin 2 3 (an+2) S+n+n の等比数列であるから - =(I+ [皇學館大] pon-350X の方程式。( 基本 107,116 (+) ①での代わりにn+1 とおく。 lan+1, an だけの式。 漸化式αnt=pantg ◆特性方程式 α=12/31-1/23 題を解くと α=-2 C# (S) a FANS (1) ** 2n-1 an+2=3. (2²) ² 本 an=3. (12/3)-(12) 20(-2) 画

教えてください！！！

011 The movie ( 1 ended 3 has ended □012 When I was a child, my mother ( secret!" 1 will 3 would often □013 I'm used to ( 1 drive ) by the time you finish that huge bucket of popcorn. 2 had ended 4 will have ended 014 The phone rang when I ( have taken 2 taking ) on the left because I've lived in Britain for a long time. driving 3 driven 4 have driven ) say, "The only thing you can't keep is a 2 will often 4 always □018 I was not aware ( of being ) a shower. 3 was taking ☐015 () a matter of fact, I have been to London four times. 1 Of 2 On 3 In 4 As □016 I have given up my apartment in Tokyo because I ( 1 lived 2 was living 3 had been living 4 am going to live ☐017 Her sister makes money by playing the violin; ( musician. 1 as a result 3 in other words B: but B : but 4 would take 2 for example 4 on the other hand ) offended him at the party last night. 2 of having 3 to be 4 to have 019 She often worked for twenty-four hours ( 1 end on 2 on end ). 3 at an end 2 A: get 4A: make ) in the dormitory. (立教大) end for end ( 西南学院大 ) B: so B: so (鹿児島大) ), she is a professional (鹿児島大) (亜細亜大) (國學院大) (近畿大) 020 My mother is trying very hard to ( A ) ends meet, (B) she never lets me buy anything unnecessary. 1 A: get 3 A : make (日本女子大) (國學院大) (センター) W TYPE A

仮定法の問題なのですが、102も103も時制がよく分からないので教えて欲しいです。 ちなみに102の答えが3で103が2です。

102) 103 When I was a child, the man treated me as if I ( 1 am 2 have been 3 were 4 will be He talks as if he ( 1 is 2 had been ) to many foreign countries. 3 have been 4 were ) his own daughter. (近畿大) (國學院大

至急答えを教えて頂きたいです🙇‍♂️🙇‍♂️🙇‍♂️

26 LESSON 7 1 Choose the best answer to fill in the blanks. (1) (1) Peter ( ) for ten years next month. she 1 teaches 3 will teach 900 (3) Our teacher is ( 1 likely the (4) My father is ( 6 more tall (2) In my class, there are three students from abroad. One is from England and ( are from Australia. another here ℗ to my climbing 3 me to climbing (8) ( Din (5) My parents objected ( & triguod ad 2 others 1 Judging from 3 Though (6) She had to shout to make herself 2 hear I have heard 2 will be teaching 4 will have taught 3 the other ) to come by the time we promised to get together. 2 possible 3 probable 4 definite ) of the two men standing at the gate. M 2 taller 3 the tall /30 (7) The project could be called a success, all things ( 1 consider 2 considered 3 considering (10) We are now in the ( (1) late about ) the mountain alone in winter. ) the sky, it will rain this afternoon. ). 3 heard (11) All teachers and students are not ( 1 necessarily 2 necessary 4 the others ) half of our training camp. 2 latter 3 later 4 the taller IACISTU \ion) sem 2 me of climbing 4 on me to climb JJ: 7-ASRE 4 hearing 2 Generally speaking 4 It being 4 to consider (9) You must leave now; ( ), you will be late for your social studies class. 1 instead 2 therefore 3 otherwise 4 accordingly 4 last ) wise and hardworking. 3 need 4 needed St (12) ( ) had the war begun when terrorists hijacked a plane. 1 The moment 2 No wonder 3 Hardly 4 As soon as (京都産) (関西学院 (13) Next week's seminar ought to provide ( ) with a lot of new information. 3 ourselves 4 us 1 ours (2 our THIO (千葉工 (近畿 AS-ARSTORSHAN (実践女 (摂 (大阪学 (センター (國學 (55) (二松学 (tale

英文法の比較です。どなたかお願いします

6. The planet is ( ) as Earth. four times as large 3 large as four times on todsord slusil M 1020012 four times largering the larger four times as nogal eds levensy ni a □ 7. 私は視野を広げるために, できるだけ多くの国を訪れるように努めています。 (茨城キリスト教大) I'm trying to (as / as / countries / many / possible / visit) to expand my outlook. u 1913ed pris 19mmuz jasttod a sramus ratiod 8. Our professor is not so ( ) a scholar as a TV personality. 201 2 many 1 much isynia 15 3 better Talaqoq) that I do 9. People live ( ) today than they did in the past. 2longer 3 longing long 10. She is ( ) healthy than she used to be. daily 2 more little little Ind odmaw why (二松學舍大 ) 99MBVbE 4 the longest (愛知大) 3 lesszion\ggu leasts) (天使大)

分かる方教えてください🙇‍♂️

26 1 Choose the best answer to fill in the blanks. (15) (1) Peter ( ) for ten years next month. 1 teaches 3 will teach (3) Our teacher is ( likely (2) In my class, there are three students from abroad. One is from England and ( are from Australia. 1 another (4) My father is ( 1 more tall 2 others (5) My parents objected ( 1 to my climbing 3 me to climbing (8) ( (6) She had to shout to make herself ( 2 hear 1 have heard 1 Judging from 3 Though 2 will be teaching 4 will have taught ) to come by the time we promised to get together. 2 possible 3 probable 4 definite ) of the two men standing at the gate. 2 taller 3 the tall 3 the other (7) The project could be called a success, all things ( 11 consider 2 considered 3 considering ) the mountain alone in winter. 2 me of climbing 4 on me to climb TOT ) the sky, it will rain this afternoon. (10) We are now in the ( 1 late ). 3 heard (11) All teachers and students are not ( 1 necessarily 2 necessary 4 the others ) half of our training camp. 3 later 2 latter 4 the taller (9) You must leave now; ( ), you will be late for your social studies class. 1 instead 2 therefore 3 otherwise 4 accordingly 4 hearing 2 Generally speaking 4 It being 4 to consider (13) Next week's seminar ought to provide ( 1 ours (2) our 4 last ) wise and hardworking. 3 need 4 needed (12) ( ) had the war begun when terrorists hijacked a plane. 1 The moment 2 No wonder 3 Hardly 4 As soon as /13 ) with a lot of new information. 3 ourselves 4 us made er discr deceived ( 東京電機大 ) Intentio e you go prepare e two g notice (京都産業大) (関西学院大 ) THIOS (千葉工業大) Gs not lil aimless NT 13 (実践女子大) (摂南大) (大阪学院大 ) chance (國學院大) (二松学舎大 SE 否定 not alwa not quit けではな • I not at (センター試験) lot ~ ei •I (城西大 N 全体否定 I する ardly N SOO A

分かる方お願いします。

3 Choose the best answer to fill in the blanks. (1) robuda to 19dmun W et am bute A S (1) This book (SD) you everything that you want to know about English grammard oose the beso Jnsbibos 2 speaks 3 tells 1 says are (1) Do you feel like ( (2) I'm going shopping now, but I'll be back ( 1 before 2 by 3 so outside. I ca (5) I am sure that the new model ( Spraying 1 will be sold 2 will sell (6) Something is wrong ( 1 in 2 with AL The (3) It is high time we ( 1 discuss 2 discuss on vsię zewboy, guisor to poterlo att era o 2919 (4) When and where did you (A) to know her? qe ot 10 dulo trigki a gnili 1 reach 2 come 3 become 4 arrive larger than old the environmental problem. ) well. 3 is sold no 81 bought ) this computer. 3 about ) long. 4 by order 152 15) 4 knows to jeom s 3 discuss about bello in vabdrid a Å 1 Heazon selem of new 4 within - oldi (F (大阪 ew li jedw of garusqmo) 4 discussed 4 selling 5 at (國學 (桜美 (中

なぜ①だとダメなんですか？

Point 081 300( APOLOER wat Hordw 3.979de, ) seems easy at first often turns out to be difficult. 3 What 4 Which 1 It 2 That Fes 〈國學院大 >