学年

質問の種類

数学 高校生

(3)についてです。 2n-5 にカッコがつかない理由を知りたいです。

還 人列の一般順 ak2 である等散列の一般項Z。 を求めょ において, の5三31. であるとき. と) 穫差 ) の一般項 。 を3 5 4 る虹かの日然攻々の値を 本詳租項が Z。ー22ー5 である数列 (gg RM かーoa で 詳し) は数中であることを証明し。初項と公其をめ 葵発数誕の一般項は, 初項と 公差がわかればすぐに求まる. 便則初項を ? とおいて, 条件よりocを求める. 陣語初項を2, 公差をの/とおいて, 条件よりZとのを求める. 較症下を 2 とすると, 公差が2 より, 第 7 項 の。 は, 王Z十(ヵー1)X2 馬語村が7より, oo十(5一1)ベ2三7 カに5 を代入する 症2ーー] より ーー]十(2一1)X2三27一3 | =7 である. 台症目初項を2 公差をのとすると, 第ヵ項 Z,。 は, 初項 一1公差 og十(ヵー1)Z 差数列 棚計31 2。=52 より. 9 ga=g+8-0 のs三十7のテ52 | 三鹿7 還人を解いて,。 =ー3, =7 「 前310oーDx7ニ7。ー4 oe の | 2 記 | 。 9) 李員00ょより, 7,-4>1000 2 LC 10 ey 拉n、 れッーーー148.4… 4 題意を満た 時 と 0 押 諾, 中意を満たす最小の自然才は. 6 るの 9 隊間2755王47 5 おっ、に / 人 罰 ーー p だから, 。 池が E 前) 5ー 4 - aa らら, 数列 {JJ は等差数列であぁ り に等しい 間ーo--」 公差 4

解決済み 回答数: 2
英語 中学生

全ての答えお願いします!

和合・ふ ーー一ーーーーーーーのの ma raeaion when Mary went mto the 田 炎の敵交を読んで。 あとの問いに符えなきい。 Many students were talking about 0 29 miled at her TLucy smiled back PS sk. Man cdasaroom。 Mary found Lucy at her de 人 Mary but she didnt look fne。 Just then theiT り 際 時 革い jave sad news for you. Lucy and her famiby Wiサ 9 ee Afte yent to Lu mr 1 r Mr. Smith left the classroom, Mary WW 人eu 1ooked very sad。Mary said, "Tim so sad。 YoD tell m ッ Mary couldnt stop ⑨(say。 Lucy said, We from Mary 4 he walked away Tears came out of Lucys eyes and 央et After dinm at om the desk。 Mary said to herselt <Was thought we were best friends Mary didntt enjoy dinner that night. 0 chair and looked at a beautifl blue リ に 0 to hear my words?" Then her mother came into the FOO Oh, Mary。 its a Yery beautitul blae hat! Tsityonr present for Lucy 2 her mother asked. “Well yes,it was。 Lucy has beantiful blue eyes. So this blue hat 9 wonderful for her. But ey wi not want this now,” Mary said. “What happened ? Both of you exchange presents at Christmas every yem yther said。 Mary began to tell her about Lucy at school. 15 at Ohristmas every yearJ her mot After her mother istened to Mary。 she said, “Wel how about going to Lucys house with me now ? You should give the present to Lucy.* Lucy was not at home. Her father came to the door。、 Mary told him about the present and gave it to him。Lucy's father hugged Mary and said, “Thank you very much、Lucy 2 ⑥(be) very happy” The next morning。 Mary saw Lucy at school。Tucy was wearing the blue hat. Lucy ran to Mary and hugged her. Lucy said, Tm sorry, Mary.【 didnt tell you about moving to London because I didnt want to ose you. But 1 was ( ③ ). Can you still be my best friend after T say goodbye to you 7” Mary said, “Of course, we will always be best 5 friends. Lucy, Tm also sorry. 1 didnt try ⑤(understand) your feelings.” When Mary came home, her mother saw a big smile on her face.、 Mary was wearin ョ pbeautiful necklace. It was the present from her best friend、 Lucy. (和) Christmas vacation : クリスマス休暇 move to :ーへ引っ越す tear: 肖 ja:棚子 。 sayto herself:心の中で思う exehange : 交換するhug:抱きしめる Wear : 身につける 1ose:欠う feeling(G) : 気持ち necklaoe :音仙0 ネックレス

解決済み 回答数: 1