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英語 高校生

解いたのがあっているか教えてください。

第 01 章 15 13 Michelle loves her dog, and ( ① washes Try! My father usually ( ② washed ① woke ② wakes 12 1 Section 1 現在時制 過去時制 ・進行形 ・時制の問題のポイント 動詞を入れる問題では, 時を表す語句を探す。 文意や空所の前後の語句に注目し, 空所の品詞や形を判断する。 Nick ( ① leaves Field 1 文法 2. The game ( ① starts My brother ( 1 watches ③ is watched Try! Maria ( COMPLEME Try! 1.Scott (move) the chair to our classroom last Monday. 時制 2. Everyone ( 1 is known ③ is washing ) up at 5 o'clock these days. LANTL 3 wake ② has started ) home about two hours ago. (le ② is leaving ③ left ④ has left ) the dog every Sunday. ④ wash an hour ago. 1 was talking ③ has been talking ④ woken PSACCH ② is watching 4 is being watched ③ will start E AS Try! Keiko is in the kitchen. She's () a pot of tea. ① is making > 2 making 3 makes 4 make SLADI When I entered the room, David (5) TV. ① has been watching ② is watching 3 was watching ④ watches ④ started ) TV in the living room at the moment. ② is knowing ) with Jan when I saw her 30 minutes ago. ② has talked ④ is talking 合 章 30 AR TO ) about his success in business. i 3 know ④ knows J&J 語形変化 She ( ) that doll very much. 80 ① like ② likes ③ was liking ④ has been liking Try! 1. I hated chemistry when I was in junior high school, but now I (like) it. (神田外語大) 現在の習慣的動作 ・ 状態を表す動詞の形 は? JOSEHONE4 (東京工芸大 主語が Michelle であ ることと every Sunday に注目 T100 過去の動作・状 態を表す動詞の形 は? about two hours ago 「約2時間前に」が示す ,現在,過去,未 来のどれ? ( 椙山女学園大 ) (湘南工科大)文 T100 今している最中 の動作を表す動詞の 形は? 主語が my brother で あることと watch と at the moment の関係に 注目 T100 過去のある時点 進行中の動作を表 す動詞の形は? When I entered the room 「私がその部屋に 入ったとき」という過去 のある時点でDavid が ainenしていたことを表すに は? 10 原則として進行形にし ない動詞とは? like 「・・・ が好きである」 は進行形にできるか できないか? Sec 6 Try 17 TE F 8

解決済み 回答数: 1
数学 高校生

解答1の四角で囲んだ部分についてなのですが、なぜnは4以上の時になるのですか? どなたかお願いします🙏

考え方 296 漸化式 an+1=f(n)・an =1,(n+3)an+1=nan で定義される数列{an}の一般項 αn を求めよ. 解答1 漸化式は an+1= 4 an+1=f(n)an となる. ここで, これをくり返すと, 解答 2 漸化式の両辺に(n+2)(n+1)を掛けると, (n+3)(n+2)(n+1)an+1=(n+2)(n+1)nan DOD bn=(n+2)(n+1) nan とおくと, この式はbn+1=0となる. 解答1 漸化式を変形して, このとき an= n n+gan と変形できて,f(n)=+3 とおくと, An+1=f(n)an=f(n){ƒ(n−1)an_1}=ƒ(n)ƒ(n − 1){ƒ(n−2)an-2} an+1=f(n)f(n-1) f(n-2)......f(1)a1 az= よって, an+1= n+2n+1 3 1 1+3a1² n n+3a 50=1/11 2 a3= 2+3 92= 4 のとき, ① をくり返し用いると, n-1.n-2.n-3.n-4 -an 2 2+3 1+391 10 2 ··1= n+2n+1n この式はn=1,2,3のときも成り立つ. よって, an= ・① 4321 n_n-1 F7654 6 n(n+1)(n+2) n(n+1)(n+2) SOURON 解答2 漸化式の両辺に(n+2) (n+1)を掛けると, (n+3)(n+2)(n+1)an+1=(n+2)(n+1) ここで,b=(1+2)(1+1) 16 より 16 bn=(n+2)(n+1) nan であるから, (n+2)(n+1)nan=6 -a an I and *** n-1 n+2 a₁=1 n-1n-2 n+2n+1 -an-1 nan REAVES (1) x(n+1) an+1 bn=(n+2)(n+1) nan とおくと, ② は bn+1=bn となり, =(n+2)(n+1)nan これはすべての自然数nに対して成り立つ. したがって, bn=bn-1=bn-2=......=b1 a=1 (n+3)(n+2) -an-2 6 an=n(n+1)(n+2) Testo At **R*12*10 (282,4)

解決済み 回答数: 1
英語 高校生

下の問題を教えてください。m(*_ _)m

各文の( 内の語のうち,より適当なほうを選びなさい. (1) The ground was covered with (falling, fallen) leaves. (2) He is a famous pianist (knowing, known) all over the world. (3) Ann looked (exciting, excited) about going to the opera. (4) Phil kept me (waiting, waited) for half an hour. (5) They watched the firefighter (climbing, climbed) the ladder. (6) (Leaving, Left) alone, the little boy began to cry. (7) I had my bag (carrying, carried) to my room. 2 日本文の意味に合うように( (1) 私たちは先週の土曜日東京に買い物に行った. We( ) ( (2) ネズミはネコを見ると全速力で逃げた. に適当な語を入れなさい . ) Tokyo last Saturday. ) a cat, the mouse ran away at full speed. (3) 私は顔が赤くなっていると感じた. I felt my face ( ) red. (4) リスクを考慮に入れると, その計画は延期するべきだ . ) the risk into consideration, we should put the plan off. (5) トニーは自分の名前が黒板に書かれているのを見つけた . Tony( ) his name ( (6) 彼女は部屋の外で立ったままだった. She( ) on the blackboard. ) ( very impressed. ) outside the room. 3 各組の文がほぼ同じ意味になるように( )に適当な語を入れなさい . (1) She took off her hat, and bowed to me. ) ( ) her hat, she bowed to me. (2) Since I didn't know what to do, I looked around. ) ( ) what to do, I looked around. (3) After I had finished my homework, I went to the movies. ) my homework, I went to the movies. 1 (1) (2) (3) (4) (5) (6) (7) (4) As it was Sunday, most shops were closed. ) ( ) Sunday, most shops were closed. (5) As I had not heard such a beautiful melody, I was very impressed. ( ) heard such a beautiful melody, I was (1 (2 (3

解決済み 回答数: 1