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数学 高校生

上の問題をこのように解きました。 答えが違ったのですが、これは、やり方が違ったのでしょうか? 原因を教えてください

IECK3 |3次方程式 r'+ px* + qx + 5=0の1つの解が2-iのとき,実数 p, +yi (x, y:実数)を解にもつならば, その共役複素数x,-yiも解にもつ。 ヒント!) 一般に, 実数係数の3次方程式ax'+bx?+cx+d=0が虚数解x」 難易度 ☆ CHECK1 CHECK2 CHECK3 絶対暗記問題 18 (東京電機大 * ) の値を求めよ。 講義 2 となる。 0, これも大事だから覚えておこう。 解答&解説 D.4が実数より,実数係数の3次方程式:1r°+px°+qx+5= 0が d 講義 a 2-1を解にもつならば, この共役複素数 (2+i)も解である。この他のも う1つの解をyとおくと, 解と係数の関係より =-1 3次方程式の解と係数の …(答) p 1 関係の公式: b (27)+(2ナ1)+y=FP a+B+y= a 9 C aB+By+ya = a 講等 1 (2-i)(2+i)+(21)y+y(27) = d aBy= a を使った! (2-)(2+i)y=(=5) 3 ③より,(4-)y= 15, 5y=-5 …Y= -1 -1 0より,4+[y ーP 1 *p=-3 講 のより, 4-)+4y=q, A+1-4=9 以上より,p=-3, g=1 9=1 .(答) 答) 頻出問題にトライ·4 難易度 CHECK 1 CHECK2 CHECK3 次万程式r+ax+b=0(ただしbキ 0) の1つの解をaとおくと、 他の2つの解は a?, α'になる。このとき, 次の問いに答えよ。 (1) a, bおよびaの値を求めよ。 12) nを正の整数とするとき, α"" を求めよ。 解答は P237 43 山角関数 指数関数と対数関数 微分法と積分法 刀程式·式と証明 図形と方程式 5-1|

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数学 高校生

英語の長文ってどうやったら読めるようになりますか

1 次の英文を読んで、問 (1) ~ (5) に且本語で答えなさい。 Lobola is the African custom of paying fora bride. Although it is an old custom, not In fact, it is being debated in Botswana. everyone in African cultures is happy with it. Many people, including many women, support payment of lobola. They explain that in Tswana culture, a marriage means joining a family, not just marrying an individual. The idea of marrying into a family is very African. just the man.Through marriage, the young woman's family loses their daughter as she then becomes a part of her husband's family. Lobola is a way to show thanks. It is a form of generosity in African culture. In its traditional form, they also explain, the groom's family gave cattle to the bride's family. But it didn't matter whether the family owned cattle or not. A woman does not get married to A man only had to pay what he could afford if he had no cattle, he could give something else, even the smallest form of payment. The tradition of lobola was a matter of pride. Today, lobola is often given in cash. purchase of a bride. Lobola is meant to join two families together. They know that But its supporters say it is not about the some people abuse the custom. But they believe that the tradition should not be tossed out because it has many positive effects. Rather than get rid of it, many believe it should just be explained better. However, many others say this custom should be stopped. They think it has become commercialized. Families make lots of demands on the groom. They think this makes lobola look very bad. They argue that in Africa's past, a girl was an asset at home. and other household chores. She did the cooking When a family lost that child through marriage, it demanded payment. Today, they think that lobola has changed into a useless tradition. In this custom, a man is buying the right to control a woman. They say women are individuals with rights. In today's world, parents do not have to be paid for a bride because their male and female children are equal. They all work and make contributions to the household. They believe that paying lobola makes it seem like a man is buying a pair of shoes or a bicycle, instead of getting married. They also argue that it is often a financial burden for couples. It is too difficult for many people to pay the price asked. So, is lobola a rich tradition, bringing families together? Or is it an ugly custom of buying women? This debate continues in Botswana, as does the custom.

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数学 高校生

(🔲5から□6まで教えてください

次の日本語の意味を表す英文になるように、C 私はよく鎌倉のおばを訪ねたものでした。 I(/ASEA (2) あなたは彼女には感謝しても感謝しすぎるということはありません。 You(nnet。 その女性は私がこの寺を訪ねることを勧めました。 The woman( Sulgart) that I (ecomunend visit this temple. (4) 彼女が寂しく思うのはもっともです。 She ( may ) ( well 私は家にいるよりも外出したいです。 I( Wo ud ) ( tather )内に適当な語を書きなさい。(各4点) )to visit my aunt in Kamakura. ) thank her ( oel )much. )feel lonely. )go out than stay home. 5 次の日本語の意味を表すように、[ ]内の語句を並べかえて英文を完成しなさい。 (各4点) 私たちの町には映画館がありました。 [ be / amovie theater / used / thereY to ] in our town. There Used tel be a movie theater in our town. (2) 夜、運転するときは、気をつけても気をつけすぎるということはありません。 [ careful / be / you / too / cannot } when yoy drive at night. You Cannot bé too careful (3) 彼らは私たちが彼らといっしょに夕食を食べることを強く求めました。 when you drive at night. They [ that / have / insisted / should / we / dinner ] with them. insted that we shauld have dinner with them. They この手紙をカナダに送りたいのですが。 [ send / to / I'd / this letter / like] to Canada. VAlike Send This le tfer to Canada. te (5) 好きではない物を食べるくらいなら何も食べたくないです。 I[ than / rather / nothing / eat / would ] eat something I don't like. would rathe nothing thath I eat something I don't like. ]内の語を用いて、( )内の語数の英語に直しな [6 次の日本語の意味を表すように、[ さい。(各4点) (1) 祖母はよく私にこのケーキを作ってくれました。L would ] (8語) My (2) あなたが彼女に会いたいと思うのはもっともです。 [ may ] (7語) You gand Mather want'tosee heト. may well (3) 事故は起こるものです。 [ will ] (3語), Acc カ lat 評価問題A 25

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