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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.

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数学 高校生

(3)の別解どんな変形してるのか分からないです

基礎問 168 第6章 積分法 92 指数関数の積分 次の定積分の値を求めよ. (1) fe²(e²+1)³dx (3) fore-dr 指数関数のゴチャゴチャ型です.積分においてeのもつ最大の利 益は「(e*)'=e"」ですが,その理由は 89 注の文章にかいてありま す。すなわち、 何かをひとまとめに考えたとき, その微分がかけてあれば、 必ず置換積分ができる からです。ただし,この基礎問も単にこの知識だけでゴールに着けるわけでは ありません。 (2) 解答 (①1) See +1)'d において, ef=t とおくと x: 0→1のとき, t1→e dt *k, d=e² y_ dt=e²dx dr d.x また、 [(1+1)dt=1/12 (t+1)=1/((e+1)-2"} (e+1)³-8 3 ==-p²-t (別解) (+1)をひとまとめと考えると, その微分は...) √ (@e² + 1)²(e ² + 1) dx = [ { (e ² + 1)³] ² = ² (e+1) ³-8 3 (2)において, ltex=t とおくと 1→0 のとき, t:1+e→2 dt dt dr 無理に展開する必要はない .. dt 1-t また, =dx dt tet (1-t) =[log (t-1)-logt]" =[log¹=¹11** 1 2e =log_ --log- 2 1+e 演習問題 92 e 1+e dx et (²) ₁₁ ===S²₁0 ²+1 -dx = L-₁ (@²+1) dx = [108(e²+1)]", -dx= -1 40-log2-log- dx 2e ・1te (3) Seredr において,r=t とおくと x: 0→1のとき, t: 0→1 dt ポイント 1+e t(t-1) - S2 + ( + 1 -1 -1 ) d t (89) 1+e e 1+e -=10g- =10g =2より 1/12/dt=zd =xdx (別解 (2) ひとまとめと考えると・・・) =log2-log(e^'+1) Ledt fedt = [-e-1-(¹-¹) fredx==(-2²Yedz Cl dr 分子分母に²をかける = — ²/² √ ^ ( − x ²³)² e ²* dx = - 1²/ [(e-1 Jo =1/(1-1/2) (あるいはe-²) からできている式の積分は e²=t (あるいはef=t とおくことを考える 169 第6章

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