回答を見ても（2）がわからないのですがどういう意味ですか？

9 - AAの部分の面積の何倍になるか。 回頂の比 右の図の四角形 ABCD は平行四辺形である。 E は辺AD上の点で, AE:ED=2:1となる点である。 AC と BE の交点をFとする。 次の問いに答えなさい。 ポイント2 □ (1) / AF: FC を求めなさい。 162 17 相似な図形の計量 B 口 (2) ABCDの面積をSとするとき, △AFE の面積をSを使って表しなさい。 A F ZED

なんで右辺の最高次の項が2x^nになるのか分かりません！！

364 第6章 微分法 Think 例題 186 関数の決定 の多項式f(x)の最高次の項の係数は1で, (x-1)f'(x)=2f(x) +81 (S-PR (0)\(\\\ がつねに成り立つ。 このとき f(x) を求めよ. (南山大) [考え方 まず、f(x) の最高次の項のみを考える. また、「つねに成り立つ」とは 「恒等式」ということである。 mimi 解答 f(x) は定数関数にならないから, 最高次の項をx" (nは n-1 自然数)とおくと、 f'(x) の最高次の項は, 1 したがって, 与式の左辺の最高次の項は, 右辺の最高次の項は、 2x" 与式は恒等式であるから, ①,②より, nx"=2x" も恒等 式となる. よって, n=2 STARS これより, f(x)は2次式なので, f(x)=x2+ax+b とお くと,f'(x)=2x+a 与式に代入すると (x-1)(2x+a)=2(x2+ax+b) +8 (a+2)x+(a +2b+8)=0 ③がxについての恒等式であるから、 =a+2=0, a +2b +8=0 (公簿) したがって Focus ( RSD a=-2,b=-3 よって, f(x)=x²-2x-3 a=0+0-01-0-8=(0) 88-0+ (S-)-01-(8-)-8=(3- nxn- N nxn ..... 練習 (1) x 多項式f(r) |100 の 3+601-58- +56=0+501- ***** f(x)=a,x"+......+ax+a (a,0)とおくと, f'(x)=na"x"'++αとなる. 定数関数なら (f'(x)=0 より f(x) = -4 となるか これは意に反する 最高次の項の係数に 1 f(x)をn次式と ると,f'(x) は (n-1) 次式 f(x)が次式(n≧1) ⇒f'(x) は (n-1) 次式 f(x) をn次式として, 最高次の項からnの値を決定する ③がつねに成り立っ どんなの値に ついても③が疲 り立つ 注》例題186 において, f(x) が条件を満たす (最高次の項の係数が1の) 定数関数, つまり, f(x)=1のとき, 与式は, (左辺)=(x-1)0=0, (右辺)=2·1+8=10 となり不適よって, f(x) は条件を満たす定数関数にならない. f(x) は定数関数ではないので、 係数比較は必要十分 性をもつ. JCB) (WY WEST また、例題 186 では 「最高次の項の係数は1」 とあるので「x"」 とおいたが、係数がわ Loor からないときは上のように 「a,x"」 とおくとよい. 例

(1)から至急解答解説お願いします🙏 なぜそれが入るのかも解説できるところはしてくれるとありがたいです😥

次の英文の( )に入れるのに最も適当なものを, ア~エから選びなさい。 thich the Itk (1) He wants to work for the company after he (8) college. 7 graduates graduates from (2) Are you () or against the plan? T 7 for 1 in TRO on FOR NAWAG JUG ay. On the day of (3) Tom asked me () I felt better. \evloe \ Hoy.\1) maldora 7 since 1 that Mark though (4) The accident happened four years (_). 7 ago before (5) That old car ( ) to him. 7 belongs is belonging is belonged (6) Hiroshi seems to ( ) back to his hometown yesterday. be gone sol festival for family I have gone 7 go 1 be going (7) Don't forget ( ) the book back to him by the end of this month. to take 7 take 1 taking will graduate song, his clam wod Had mates decided early I will graduate from I with I whether I long I will be belonged I having taken

青線部についてですが、どうしとこの文中に「have to」が入るのですか？？

(3) 英語が少々聞き取りにくくても、内容が素晴らしければ皆が真剣に耳を傾ける。 [新潟大†] Even if your English ins a little difficult to to catch as long as and you have to say is interesting, everyone listen ^ what carefully to you Words & Phrasos)).

空欄の所と間違えているところ教えて欲しいです🙇‍♀️🙏

6 分詞 (LESSON 14-15) 評価問題 氏名 ()から適切な語句を選びなさい。 ( 3点×4=12点) (1) This is a picture of a bird (drink/drinking/drunk) water from a pond. (2) We were (surprise/ surprised/ surprising) at her colorful dress. (3) The old man sat on the sofa with his legs (cross/crossing/ crossed). (4) My sister had her hair (cut/cutting/ to cut) by my mother. [ ] の動詞を適切な形にして、英文を完成させなさい。 to music. (1) Mike reads a book, listening (2) They left the gate Closiny all day long. (3) The picture (4) The boys kept Painted by Emma is very beautiful. Playing the computer game for hours. 13 ( )の語句を並べかえて、 英文を完成させなさい。 ただし、 下線部の動詞は適切な 形の分詞にすること ( 4点×5=20点) (1) (someone / in / there / of / is / front / wait) the door. There is someone wailing in front of (2) (got/cell phone/I/repair/my) yesterday. ( 4点×4=16点) [listen ] [close] [paint] [play] I got refailed my cell phone (3) We (the shop/ be baked / we / apple pies / at ). We (4) (a new restaurant/found/drive/he/ the car,) near his home. Priving the cat he found a new bestrant the door. /100 yesterday. near his home. (5) Ann watched (her cheeks/run/the movie / tears/down/ with). Ann watched the horie running dan with her checks teats ④4 次の各文の誤りを訂正して、全文を書きなさい。 (1) その眠っている赤ちゃんは私の息子です。 The baby sleeping is my son. The sleeping baby is my soul (2) 先生は彼の生徒たちに囲まれて座っていました。 The teacher sat surrounding by his students. the surrounding teacher sat by his students (3) お父さんに叱られたので、その女の子は泣き始めた。 Scolding by her father, the girl began to cry. Scolding by her father the girl began to ch (4) 彼女は車をそのホテルに駐車したままにしておきました。 She left her car park at the hotel. 5 次の日本語の意味に合う英文を作りなさい。 (1) 彼女は皿を洗うのに忙しかった。 (6点×4=24点) she was busy washing the dishes (I で始めて) I heard my brother singing the song (his で始めて (2) 弟がその歌を歌っているのが聞こえました。 (3) 彼のスピーチは退屈でした。 His speech was boring ( 6点×3=18点) 6 あなたが何かをしに行って, そのとき感じたことなどを3~4つの英文で書きなさい。 (5点) 会話の最後に入る気持ちを自由に考えて書きなさい。 A: The university entrance exam is coming up soon. B: I'm getting nervous. I don't know if I can pass or not. A: (5

すいませんオレンジで書いた所はあっているでしょうか?答えがないのでお願いします🙇

Exercises ✪ Fill in the blanks and complete the conversations. 1. A: 1 want to be a good soccer player like you. Could you give me advice? B: I think it is any patie every day. (あなたが毎日練習することが大切だ) 2. A: I thought you went to the park to play baseball. B: 1 decided_NOTTO 40 (行かないことにした because I have a lot of homework. 3. (Talk about things you are good at and bad at by following the example.) Example: It is easy for me to play the piano because I took piano lessons for ten years. On the other hand, it is difficult for me to play the guitar. 2 Fill in the blanks and complete the conversations. 1. A: Yuka speaks French very well, doesn't she? B: That's right. She seems in France. [ study] 2. A: He said he had nothing to do with the case. What do you think? B: I doubt it. He seemed something about the case. [know] 3. (Your friend Naoki looks pale. Say something to him by following the example.) Example: You sick. You should leave school early today. to be appear very

答え合わせのためにこの問題を教えてほしいですお願いします😭😭😭

Try it out! 1 下の類 を適切な形で( regal にいれて, 英文や会話を完成させましょう。 boog &UndT ) the red T-shirt is John. Next to him is my brother Bob. ) so long." "Don't worry about it." 1. To boy ( 2. sorry to have kept you ( sill loodus 3. Three days later, the police found the ( bered m However, they were unable to find the money in it. 4. The photo ( live in such a house one day. ) wallet at the second-hand shop. T ) from the window upstairs was really beautiful. I hope I can colo stiup daidt vort steal/ take / wait / wear ()内の語句を並べかえて, 英文や会話を完成させましょう。 10 BUYT 1. We saw (her / the street / her car / across / parking). She must be here somewhere. 2. "Did you watch the baseball game yesterday?" "Yes. It (an/was / game / exciting)." 3. "Don't you hear something?" "It is (falling / rain / on / the / the roof)." BUTT 10t Teltonio 4. My father (valuable / his / watch / stolen / had). He was really careless. 5. I (with/them / talking / each other / saw) for a long time. They seemed to have a among song W r serious argument. CHOY 6. It was windy last night. We (all the windows / keep / to / had / locked). ber of vase hood and neilma miq ni notitWE して会話を続けてみよう。

全くわからないのでお願いします！

やり直し (2)数列{cm}の初項から第n項までの和を n2 +4n, 数列{d}の一般項を d"=3"-1+nとする。 このとき,数列{cn}の一般項はCu= Su-sure Cn= を得る と表される。 よって である。 Tn = ② cd を求めよう。 T= T は, (1) の S を用いて シ 2 In Tn=Sn+Σ セ = n+ n ス 35 n+ ツ テ + ALACA DE 1k-1 ト ナ Sa-San 4 +3 intilitecht-si =x+2n+1+4h+ 4 fr-4 = 2043 わか + 2 | 3 |k² + ‡_ _k) 800².03- タチ = n(n+ += ヌ [n+ ネノ

すいませんオレンジで書いた所はあっているでしょうか?答えがないのでお願いします🙇

4. Jack seemed [appeared] to Exercises → Fill in the blanks and complete the conversations. 1. A: 1 want to be a good soccer player like you. Could you give me advice? B: I think it is every day. (あなたが毎日練習することが大切だ) 2. A: I thought you went to the park to play baseball. B: 1 decided (行かないことにした because I have a lot of homework. 3. (Talk about things you are good at and bad at by following the example.) Example: It is easy for me to play the piano because I took piano lessons for ten years. On the other hand, it is difficult for me to play the guitar. 2 Fill in the blanks and complete the conversations. 1. A: Yuka speaks French very well, doesn't she? B: That's right. She seems studied in France. [ study] 2. A: He said he had nothing to do with the case. What do you think? B: I doubt it. He seemed something about the case. [know] 3. (Your friend Naoki looks pale. Say something to him by following the example.) Example: You appear to be very sick. You should leave school early today.

なぜこの文章はSV…がなく、to不定詞だけなんでしょうか 訳し方がわかりません

1 SPACE JUNK It is hard to believe that space itself can be polluted by human efforts), but 助(皮)Vi it is true even the outer limits can face damage. We have trashed the orbits our 副 助 Vt O spacecraft travel through. So much so that, before every launch of a space shuttle, NASA's high-speed computers run for a full 24 hours on just one element of the M... flight to choose a safe orbit, so that the shuttle will not be destroyed (by colliding) (Vi) M with some other man-made orbiting body) M 形 F!! 71% 形 ace is in fact