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Mathematics Senior High

2点質問したいことを書きました! 解説お願いします🙇‍♀️

基本例題 51 1次不定方程式・ 方程式 3x-7y=1・・・・ ① の整数解を考える。 ( ① を満たす1桁の自然数x,yの組はx=ア,y=イであるから, (x-ア 7( POINT ! その イ)=ウが成り立つ。3と7が互いに素であるから, ① の整数解は,整数kを用いて, x=エ k+ア,y=オk+イ] と表 される。 解答 ① を満たす1桁の自然数x,yの組は x=75, y=12 1+= ①-②から 1次不定方程式 ax+by=cの解き方 (a,bは整数で互いに素) [1] 方程式を満たす整数解x=p, y=gを1組見つける。 〔2〕 ax+by=c と ap+by=cの差を考え, a(x-p)+b(y-g)=0 の形 にする。 〔3〕a,bは互いに素であるから, 整数を用いて x-p=bk, y-g=-ak→x=bk+p, y=-ak+α DIEOA (1) よって 3・5-7・2=1 あの最大 ...... ② 第7章 整数の性質 3(x-5)-7(y-2)=ウ0 : 特定 3と7は互いに素であるから, ③ より 2181 x-5=7k, y-2=3k (kは整数) よってx=±7k+5, y=ォ3k+2 st'ndt = DI POINT! [1] 125 (1) 22.0 3.A# POINT! [2]= ③1 X-5=7Kとした時 y-2-3kと計算 せずに式の形が 判断するのか? (2) 3 (1-5) 21 (4-2) 20-- 7 2-5=7kをしたら、数 計算せずに y-2=3kg 質 POINT! 〔3〕 ここに関係なく、毎回決めれるのか 参考 a,b の値によっては, ax+by=cの整数解の1組が容易に見つからない場合 がある。その場合は ユークリッドの互除法を用いる(重要例題 29 参照)。 所を用して 最大公約数を求める方法 7-711"OFA:+

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English Senior High

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

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English Junior High

現在完了形の問題です。 わかる方、答えを教えてほしいです。 お願いします!

第9章 OO 1 次の[ ]に入れるのに適するものをアーエから選びなさい。 (1) I have never [] to Kyushu. 7 be was ウ I been 1 am (2) A: Have you finished your homework ? B: [ ) (3) A: B: I've been here for a week. Yes, I am. 1 No, I have. 7 Yes, I do. How [ ] have you been here in Japan ? STEP 2 OO (1) 1 long far 7 high (4) A: Can you come and help me? B: I'm sorry I can't. I [ 7 have 1 haven't (5) A: I read I Am a Cat "written by Natsume Soseki last week. ] It was very interesting. B: [ 7 I've read it, too. I couldn't read it. (2) a a I fast I has been-since b ). 2 次の文の()に入る語句の組み合わせとして最も適切なものを選びなさい。 ) to the United States ( (1) I have ( 7 gone-then 1 been-before (2) My mother ( 7 is-while ) finished my homework yet. has I didn't I've never read it. I I don't want to read it. I Not yet. ) sick in bed ( 1 got-before became-when visited-already b I lost my bike, and I don't have it now. my bike. 4 次の日本文の意味を表す (1) 彼はいつから学校を How (2) しばらく会わないう You've grown so (3) その列車はちょう The train (4) 私たちのチームに Our team rained here for a month. *** ) last winter. is-during 3 次の各組の文がほぼ同じ意味になるように, He died five years ago. He for five years. His mother became sick last week. She is still sick now. His mother sick since last week. We have had no rain here for a month. (3) 5 次の()内の語を す。 (1) I have (Tok I have に適する語を書きなさい。 I writte (2) He (years He (3) Have (to Have (4) (about (5) (I/m 6 次の場合 相手が 7 次の (1) ど (2) (3) 語句 be

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