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英語 高校生

間違っている問題を教えてください。

2 次の英文は明が書いた作文です。 これを読んで、あとの各問いに答えなさい。 Last summer when I was coming home from school one day, I found a few red tomatoes in our *field. I *picked one of them and ate it. It was () good that I ate another one. "Your tomatoes are delicious. I have never had such good tomatoes," I said to my mother in the field. ) they *taste good. You picked red She said, "Thank you. My tomatoes don't look beautiful, ( 2 5 tomatoes and ate them, didn't you? That's the best way to eat tomatoes. Why don't you grow tomatoes next year?" mother, Is it difficult for I (to / how/know/ take / didn't) care of tomatoes. So I asked my me to grow tomatoes?" My mother said, "No. It's easy. You don't need to give them much care. The earth grows them. But you have to give water to tomatoes every day." Then I decided to 10 grow tomatoes. 15 This April my mother helped me to *plant tomatoes in our field. Every day I took care of them. In June their yellow flowers *came out *one after another. In July some tomatoes became a little red. *Several days later they were *red enough to eat. My mother and I picked them and enjoyed eating them together. She said, "These taste very nice. These are better than mine." ぼくは、父にぼくのトマトを食べてくれ At *supper my mother brought my tomatoes to the table. BIKROHEL. He tried one of them and *praised me. I was happy and *proud when I heard his words. Next year I want to grow other vegetables, too. (i) tomato トマト field pick t taste ~ 〜な味がする one after another 次から次へと red enough to eat 食べられるほど ( 十分に) 赤い plant 植える come out < supper (1) ①,②の( )に適する語をア~エから1つずつ選び,記号で答えなさい。 7 too SO but I before ① [ア] @[7] (2) 下線部 ③ が意味の通る正しい英文になるように,( )内の語を並べかえて、全文を書きなさい。 I didn't know how to take care of tomatoes.... (3) 下線部④は日本文には英文になおしなさい。 ④ (トコートを育てることは難しいですか。 3 (I asked my father to eat my tomatoes. (4) 本文の内容と合うように、次の問いに3語以上の英文で答えなさい。 Did Akira plant tomatoes with his mother this April? - earth several days praise ほめる proud 誇らしい ...... Yes, they did.

解決済み 回答数: 1
数学 高校生

黄色線の所をf(1)=2としてはいけないのは何故ですか?f(-2)=-1の代わりにf(1)=2を使ったら(a,b,c)=(0,7,-5)となってしまいました。この間違った式は何を表してしまっているんですか?

xについての整式f(x) をx+2で割ると - 1余り, (x-1)' で割ると7x-5余 る. このf(x) を次の式で割ったときの余りを求めよ. ((1)) x-1 (2) (x-1)(x+2) (3)(x-1)(x+2) 例題 2.2 【解答】 以下Q(x) (i=1, 2, 3, 4) はすべて整式を表すとする. 題意より {f(x) = Jf(x)=(x+2)Q(x)-1, \ƒ(x) = (x − 1)²Q₂(x) +7x−5 とおける. (1) f(x) を x-1で割ったときの余りは剰余の定理により, f(1) であるから, ② より, につい ・・・ ( f(1)=7・1-5=2. (2) 整式f(x) を2次式(x-1)(x+2) で割ったときの余りは1次式か定数であるから ax+b (a, bは定数) とおける. さらに, 商を Q3(x) とすると, f(x)=(x-1)(x+2) Q3(x) +ax+b. ① よりf(-2)=-1, ② より f(1) = 2であるから, [f(-2)=-2a+b= -1, f(1) = a + b = 2. したがって, α = 1,6=1 となり, 求める余りは, (3) ②にx=-2 を代入すると, x+1. 20 f(-2)=(-2-1)'Qぇ(-2)+7・(-2)-5 =9Qz(-2)-19= -1. と書ける.これを②に代入すると, この等式から Q2(-2)=2が導かれる. 剰余の定理により, Q2(x)はx+2で割ると2余ることがわかり,商をQ(x) とおくと, Qz(x)=(x+2) Q4 (x) +2 f(x)=(x-1)^{(x+2)Q(x)+2}+7x−5 =(x-1)^(x+2)Q(x)+2(x-1)2+7x-5 =(x-1)^(x+2)Q(x) +2x+3x-3. ・・・(

解決済み 回答数: 1