図形の計量の問題で 問題がPA＝PB＝PC＝4、AB＝6、BC＝4、CA＝5である三角錐PABCの体積Vを求めよ。 という問題文で、sinθを求めれる所まではきたんですけど、どうやってAMを求めて三平方を使ってPHを求めるのかが分かりません。答えは下の方に書いてあるように5... 続きを読む

4 A P 4 A 6 6 A off 4 5 e 三角錐PABCの体積を求めよ。 △ABCで余弦定理より、 36.25-16 COSA= 2.6.5 COSA Mu Q、PHの方が 分からない。 4°-AF sink=-costo 2 (-(2) s=1-1 (7 (6 B 4 C Siθ 17 (6 Sing= 8 = 2 1 6 - 5 5 42 15.5 4 453 5.3 # 切り取

赤線部のfirstとtoの間はperson が省略されているのでしょうか？🙏 お願いいたします🙇🏻‍♀️

stenut 679 ( ) Mr. Johnson was a really considerate person. If anyone got sick, he was the first to visit and offer help. ①The late 2 Late 3 Latest 4 The latest sk 〈上智大〉

助動詞の問題です教えてください。よろしくお願いします

1. 次の文の( )に入る適当な語句を ①〜④ から選びなさい。 (1) I( ) go to the doctor. I'm feeling much better. mustn't don't have to should (2) You ( ) take exams this week. I wish I were you. needn't to haven't to need not (3) I( ) this book to the library yesterday, but I did not. may [大阪産業大 don't have (青山学院大 ] returned should have returned have to return have returned BEX (4) I'm afraid there's no one named Hayashi in this office. You ( ) to the wrong office. should have come cannot have come must have come needn't have come [名城大 (5) You might ( better ) throw your money into the sea as lend it to him. as well at least not (上智大]

時制の問題です。教えてください。よろしくお願いします

2. 次の英文には誤りが1か所ずつある。 番号を答えなさい. (1) A: Have you seen her recently? B: Yes, I've seen her only yesterday. We spent half an hour chatting over a cup of coffee [東邦大 (2) While he has been walking, the idea for the end of his poem came into his head. CARA one. 東邦大) (3) I'd left my umbrella on the train again! I'll have to buy another (4) When you will have finished mowing the lawn, come to the garage and the new shelves. help me put up (同志社女子大)

時制の問題です。教えてください。

1.次の文の( )に入る適当な語句を①~⑥から選びなさい。 (1) Robert ( ) ill for three weeks. He's still in hospital. had been @has been O is will be (創価大) (2) Computer networks and new tools of communication ( ) changed the life of college students [神奈川大〕 have been have > were are (3) Frank ( ) Utah in 1996 and ( left-worked > in Oregon since then. left-has worked has left-was worked has left-worked (4) The meeting today ( will have finished ) by the time I get to the office. finishes will finish [札幌大 has finished [ 青山学院大 ]

v で始まる単語らしいのですが、わかる方教えて欲しいです

Isabelle received two excellent job offers, so she had a difficult time deciding which one to accept. She ( ) for several days before finally deciding.

解説お願いします。 (2)の問題で、1行目のマーカー部分の変形をする理由がわからないです。 私は変形しないまま解いて間違えたのですが、変形しないままで正答を出す方法はあるのでしょうか？ 解説が式変形をしている理由と、変形しなくても解ける解き方があればその解き方を教えていただ... 続きを読む

例題 251 定積分で表された関数 合 頻出 ★★☆☆ 次の等式を満たす関数 f(x) と定数 αの値を求めよ。 *f(t) dt = 3x²+x2 ② f(t)dt = 3x-ax+1 *f(t) dt は、 の関数である。 例題 250 との違い … 等式に定積分を含むのは同じであるが、積分区間に変数xを含む * f (t)dt = [F(t)] = ← a = F(x)-F(a) xの関数 見方を変える xで微分すると off(t)dt= = d{F(x)-F(a)}=f(x) dx dx =0 思考プロセス clione x= を代入すると f(t)dt = Action» f(t)dt を含む等式は,xで微分せよ 16(1) a b) (x=th(3) 解 (1) 与式の両辺をxで微分すると, caf*f(t)dt=f(x)より f(x) =6x+1 ・a ( =(1) ① --- 与式にxa を代入すると, "f(t)dt=0 より ff(t)dt=0 を用い (10=3a2+α -2 TAM (3a-2) (a+1)= 0 より 2 るために、積分区間の下 端のαをxに代入する。 a= 3 1536th(+ x 8-= ① LF dt = - [Fa == f(t)dt M(1) (2) 与式は ∫*f(t)dt = -3x+ax-1 ①の両辺をxで微分すると, dxf (edt=f(x)より f(x)=-6x+α ① に x=1 を代入すると,f(t)dt=0 より よって 0= -3+α-1 a=4 ②に代入すると f(x)=-6x+4 積分区間の上端と下端が 一致するようなxの値を 代入する。

英単語 空所に入る d で始まる単語がわかる方教えていただきたいです

A: Roy, you need a ( ) from the pressures of the office. You always seem so stressed out. B: I know, Patti. I'm thinking about starting to play golf again to take my mind off work.

動詞+前置詞のものと群動詞の見分け方を教えてください🙏

答えあってますでしょうか🥲🥲 8番が2番か4番かで迷っていて、、😭😭

7. A Do you have a pen I could borrow? B Sorry, but I don't. A: ( ) Thanks anyway. ①Oh, you do. That's too good. 2 Here you are. 4 That's all right. 8. Sally: Can you wait for a couple of more minutes, Jack? I'm not ready yet. ) I'll be in the car, so don't forget to lock the door. Jack( ①I'll miss you. 3 OK. I can't see it. 9. A We're all finished. B: Yes. Everything was great! ②Not so much. ④Sure. No problem. A Thank you so much. We never could have done it without you! B: ( It was my pleasure. 1 Not at all. 3 Nothing to mention. ②You're right. 4 I'm sure you couldn't. <名 10. A Hurry up, or you will be late for the train. B: ( ) The train comes every three minutes. 1 I'm going. ② You said that. 3 I'm coming. 4 Don't worry. 11. A Would you mind turning off the TV? I have to get to sleep early tonight. B: ( ) You're right, we have tests tomorrow. 1 No, I don't want to. ③ I don't suppose so. 2 Yes, of course. 4 Certainly not. 12. A I'm headed to the library to check out some books. B:( ) A Not at all. I was hoping you would. Could you pick up something for me? 2 Do you have enough time? ③ Mind if I tag along? 4 Should I come with you? 13. A( ) B Sure, what is it? A: Can you keep an eye on my bag, please? I'd like to grab a coffee.b B : Go ahead. It will be safe with me. Would you like me to get some coffee? 2 Do you know where I put my bag? 3 Have you ever lost a bag at the airport? Can you do me a favor? ad