画像の1枚目の問題を解いたのですが、途中でわからなくなったので解き方を教えていただきたいです！ ←問題　　　　　　　答え　　　　　　　解き途中→

Practice 43 n 2 (1) a2, 3, as を求めよ。 k=1 数列{an} は, a1= 1/2, an=(n=1, 2, 3.……)を満たしている。 (2) an+1 を anとnで表せ。 (3)一般項 αn を推定し, それが正しいことを数学的帰納法を用いて証明せよ。 [08 愛媛大]

中3理科のイオンの問題です！どうしたらこうなるのか全く理解できないので分かる方いたら教えてもらえると嬉しいです🙏

ナトリウム原子がナトリウムイオンにな るようすを、イオンを表す化学式で表し なさい。 Na → Na++ e e¯ 銅原子が銅イオンになるようすを、イオ ンを表す化学式で表しなさい。 Cu→ Cu2++ 2e¯ 塩素原子が塩化物イオンになるようす を、イオンを表す化学式で表しなさい。 塩化ナトリウム (食塩) NaCl の電離を 表す式。 Cl + e → CI NaCl→ Na* + Cl 塩化銅 CuCl2の電離を表す式。 CuCl→ Cu2+ + 2Cl

marry の形がわかりません

12 1 cause (3) What did he ( 1 ask (4) The girl closely ( ①resembles (5) Could you ( I talk ) my dead mother. 2 resembles of ) me which one is his? 2 speak TRIAL 2 1》各文の( )に入る最も適切な語句を選び、番号を答えなさい。 ④forgive (1) We don't ( ) the students to have visitors in the dorm rooms after ten o'clock. 2 prevent allow (2) John's vast knowledge didn't ( 3 let ) him solve the problem. 2 save ) to you? Anything interesting? 2 say ④help 3 allow mudis blom ud ④tell 3 talk lew to easly s dal CEME (成蹊) (関西学院)) (学習院大) (2) You c (3) The feve 2 各文には (1) The d tree. 3 resembles to ④resembles with (4) I [101] (高千穂新大) tell (5) Ma 3 say (名古屋学院大) (6) We ( ) New York "the Big Apple." ④ call (6) E 3 speak 1 introduce 2 say [開催要 (金沢工業) 3 (7) Peter doesn't get ( 1 along ) well with his father. 2 forward 3 much ⑥to (東大) Hi I laid (城西大) 4 of lliw 5 sowi (8) After some hesitation, he () the book on the desk. 19mm) Em 2 lied dary lay mid (tog slote lain (9) We ( ) the matter for hours but came to no conclusion. 001\1800 1 spoke (10) He ( ①informed 2 discussed were ③3 discussed about 4 said ) his teacher of his success in the examination. bise boy ind 3 noticed molni) 'nb4 suggested gnise 2 reported (11) The poor old man was robbed (d) his money. for me to absood from? \bo al two o'c (中央大) 日本 (1) ted bis(**) 4 of (2 (南山大) married with 1 off (12) In the spring of 1985, Frank (109) Jennifer in a large church ceremony.b I married 2 married to hely 3 got married eloqa (13) A: Haven't you finished that report yet? B: ( badguel in bodigusi) siges ) me a few more minutes and I'll get it done. 2 Share 3 Take \ is srt of nateil of (センター試験) Wait 1 Give ☞(14) A college education will () you to get a broader view of the world. ad ei w(t>- 1 let (15) This computer cost ( 2 enable 3 make 4 take (京都産業大) ③ of me 4 for me her speech. (大阪産業大) A+ 3 with ④against ) my whole salary last month. 1 me 2 to me (16) Astonishment almost deprived the girl ( 2 at 1 of (17) The welfare office provides ①food with people in need 3 people in need with food (2) vast Hints! (14) broader 2 food people in need 4 people in need for food (8) hesitation (9) conclusion (16) astonishment (17) welfare ( 秋田県立大)

間違っている所を選ぶ問題です 分からないので教えてください🙇‍♂️

2 Choose the underlined part that is INCORRECT. (1) art escor (1) Every alive creature in the sea ① 2. (2) I lost my wallet during I ②. ③ is affected by marine pollution. ④ was jogging through the park. (3) When I started teaching, my grandfather made me promise ① about peace with my students. ② 17 E Win fael (西南学院大) (近畿大) e that I will share his lesson Prague odi ③ quor bloo (SHAD) (4) You had better set the alarm clock for fear you should get up lately. ② ③ (玉川大) (5) Studies suggest that wolves and dogs split into different species around 100,000 years ① before. 2. (学習院大) 5 m otni ST DOYA (E) (6) I was spoken by a foreigner in English when I was waiting for a train at the station. ① ② ④ ( 広島修道大 ) 4 (7) Our hunger for new places and new ways have been with us for ages, almost like a mysterious disease. won and lemeziz m'l oli lololls (1)

間違っているところがあったら教えていただきたいです🙇‍♂️

4 1 Choose the best answer to fill in the blanks. (1) (1) You should ( ) or he might get lung cancer. ①get him stopped smoking 3 have him stopped smoking 2 get him to stop smoking have him to stop smoking /13 (京都女子大 ) ①great (2) The more money he had, the (y 2 greater ) care he had to take of security. 3 more greater (玉川大) most greatest (3) When I was in high school, I ( I have belonged belonged ) to the badminton club. 3 was belonging belong (南山大 ) 1) it. (4) I prefer playing baseball ( I to watching 2 to watch than (崇城大改) 3 for watching 4 watch (5) He just left home a minute ago, so he ( 1 cannot go 3 must be gone (6) "That's not your car." "My car ( 1 is being ) repaired, so I borrowed my brother's car." ③3 needs ) far. 2 cannot have gone (近畿大) ④must go (南山大 ) ( 大阪学院大 ) THIO 4 is under 2 wants (7) A knowledge of science is ( ) great use to everyone. 1 at 2 for 3 of 4 with (8) I wish ( ①having 3 I had 4 I will have (共立女子大) enough money to buy the computer game. 2 having had (9) His name is known ( ) everybody in this group. 1 as 2 with 3 for 4 to (京都文教大) ). so does Bill 4 Bill does so (駒澤大) (10) Bessie likes jazz dance very much, and ( 2 so Bill does ) help me if you don't have time. I can do the job myself. 1 Bill does (11) You ( 1 aren't able to 2 don't have to 3 aren't going to 4 should to 各種 ( 神奈川工科大) (12) India has the second ( ) population in the world. 1 large 2 largest 3 many ④numerous (千葉工業大) (13) Jack and Bill will meet me on Wednesday and Thursday ( ). ①respectably 2 respectively 3 irrespectively likely (松山大

サイコロをn回投げるとき、出る目の最大値が3となる確率の求め方を、教えてください 複数別解も募集してます

10,(3)xについて解くと、x>-2/aとなり、aはa＜0を満たす定数だからマイナスをかけてx＜2/xだと思ったのですが、答えはx＜-2/aでした。どうしてこの答えになりますか。

10次の不等式を解け 4 (3)ax+270caはacoを満たす定数) ax+270 ax >-2 2 x> 2 x< a a

この問題ですが、右下の図は解答で、その前までが自分で求めたやつなのですが、自分の求めたのだと解答のような図にならなそうなんですけど、どこが違いますかね、？

演習 (関西大) 63. 放物線y=x2-1が直線y=ax+bとy>0の範囲で相異なる2つの共有点をも つとする.このような (a, b) の範囲を図示せよ. (福岡大)

なぜ弧ABがΘになるのでしょうか。教えていただきたいです。

15 応用 半径1の円0の周上に,中心角の弧 例題 3 AB をとり, AからOB へ垂線ACを 5 引く。 このとき, 次の極限値を求めよ。 AB (1) lim- BC (2) lim 0+0 AC 2 0 +0 AB Tips 線分AC, OC や AB の長さを0を用いて表す。 解 (1) ∠AOC = 8 より AC=OAsin0=sin0 10 10 また, AB=0であるから AB lim = = lim 0+0 AC 6→+0 sinθ (2) BC=OB-OC=1-cose より BC lim 0→+0 AB 2 =1 1-cos == lim B CosD 0 A A 0 +0 02 =lim (1-cos) (1+cose) 0 +0 02(1+cos0 ) =lim 1-cos20 e+o02 (1+cose) =lim sin20 0+002(1+cos 0) =lim 0 +0 =12. 2 {(sino)². 1 1+1 = 1 2 1+cosg} ま Sosing (土) mil

この文章の理解ができません。とくに赤の四角で囲ってある部分の訳ができないので教えてください。

The difference between a verbal participle and a gerund is not always obvious, but note what is really said in each of the following. Do you mind me asking a question? Do you mind my asking a question? In the first sentence, the queried objection is to me, as op- posed to other members of the group, asking a question. In the second example, the issue is whether a question may be asked at all.