(2)番です 1枚目の答案のように2分の1でくくってみたのですが間違っていました。なぜマイナスがつかないのか教えてください

原点の周りに次の角だけ回転する1次変換によって、点 (23) が移される点の座標を求 めよ。 (1) 45° AFA (1) cos 45° sin 45° (2) Join よって, 点 (2, 3) が移される点の座標は (2) 150° 'cos 150° -sin 150° sin 150° S -sin 45°\/2\ 1 -1\/2\ 1 C0545-) (3) - 2 (1-1)(3) - (3) cos 45° √√2 √2 1.2 5 (-1/2 V2√2 1 \2\ = = CON 150 )(6) - 2 (³-√3)(3)-1(-2/3-3) cos (3) -60° よって, 点 (2, 3) が移される点の座標は (a cox F2% /To 2√3+3 2-3√3 2 2 1212 2 10

「2」の問題で、どこまでがあっていてどこから違うのか教えて欲しいです。 出来ればわかりやすい説明をお願いしますm(*_ _)m 1枚目問題 2枚目答え 3枚目自分の解いた答え

258 次の式の値を求めよ。 *(1) sin 80°cos 170°-cos 80° sin 170° (2) sin20°+sin70°+cos110°+ cos 160°

この問題の解き方を教えてください

177 2次関数y=ax²+bx+cのグラフが次の c, 62-4ac, a+b+c の符号を求めよ。 (1) y (2) YA H 0 Jeledtelte I O (3) ya O x 7

これって３枚目の下線部だから矢印の計算になるのですか？

436 関数の定積分を用いて,次の不等式を証明せよ。ただしnは自然数と する｡ X 2(vn+1−1)<1+- 1 1 + ・+・ /2 √3 +/1/2≤2√n-1

なんのために最後に漸近線を求めているのですか？

重要 例題 78 w=z+ a² 0でない複素数とし,x,yをz+ 1 2 を満たす定数とする。 zが偏角 α の複素数全体を動くとき、xy平面上の点 (x,y) の軌跡を求めよ。 時で [類 京都大] 重要 26 指針偏角αの範囲が条件であるから,極形式z=r(cosa+isina) (0) を利用。 1を の形に表すことにより,x,yをそれぞれr,αで表す。 1 z + 解答 Iz=r(cosa+isina) (r>0, 0<a<- >60120 * ゆえに 0<a < 1/2 よって つなぎの文字を消去して, x, yだけの関係式を導く。 なお,00<a</ より、xの値の範囲に制限がつくことに注意。 HOOVER 練習 78 1 z+ -=r(cosa+isina)+(cosa-isina) r+ = (r++)cosa+i(r— — )sina r= cosa, y=(r1) sina x=(y+/-/- であるから r COS α x 双曲線 x ゆえに COS α r 2 x y x 1² ² = 1 +5 +²1² (cosa + sina) (cosa = 2 COS x #601 cos a x≧2cosa -=rt π <<//) とすると よって また,0から ゆえに したがって、求める軌跡は 表す図形 (2) + 4 cos² a cos a>0, sin a>0 y sin a r y sina 図 x2 したがって 4 cos² a 4sin² a ここで,y>0であるから、(相加平均) (相乗平均) により 1 + 122 √/1.7 CAGLEDEYSET =x+yi を満たす実数,αを0<a< π x cos a -(tana)x<y<(tana)x 4sin'a + sinα =2 y > 0, x COS α T y sin a y sin a 等号はx=1のとき成り立つ。 J=1 x y ->0 sin a COS Q -=1のx≧2cosα の部分 絶対値や偏角αの範囲 に注意。 700円 =—-{cos(—a)+isin(—a)} ◄z+1=x+yi r38670 10. 面上で描く図形の概形をかけ。 (1) |2|3|z-1|=|z-i| 検討 第4章で学ぶ極 限の知識を用いて, yが実数 全体をとりうることを調べ ることもできる。 lim(r-1)=∞, lim 1 (₁ - ²) = -₁ ∞であり、 +0 sinα> 0から 17 新東線 limy=-∞, limy=8 r+0 点 (x,y) の軌跡は次の図の を求めている T2= -2cosa yay=(tana)x (1) -------- 1 0 でない複素数zが次の等式を満たしながら変化するとき, 点2+ / 2cosa y=-(tana)x が複素数平 139 2章 10 媒介変数表示

教えてください😰😰

22 TRY! 次の英文を受動態の文に書きかえなさい. My father taught me shogi. I ( ) () shogi by my father. 2 We named the little dog John. The little dog was ( )(). 3 The result of her exam satisfied her mother. Her mother was ( ) ( ) the result of her exam. 4 Emi looks after the cat. The cat is ( ) ( ) ( )by Emi. 5 Snow covers the roof of his house. The roof of his house is ( What's this called ? ) ( ) snow. ● ● ● ポ 0 ● ・ ● · ●

漸近線を求める問題です、お願いします

8. The temperature, 0°C, of a cup of tea / minutes after it was placed on a table in a room, is modelled by the equation 0 = 18 +65e s Find, according to the n. el, (a) the temperature of the cup .. 18⁰ ℃ (1) (b) the value of 1, to one decimal place, when the temperature of the cup of tea was 35 °C. 35 = 18+ 65ē 7/8 -t/8 (3) ⇒19=65€ 7/65 lu (17/4)= -4/8 (c) Explain why, according to this model, the temperature of the cup of tea could not fall to 15 °C. HA (0,94) 720 N = A + Re en it was placed on the taki (8,50) 1>0 μ= A + Be 8 04-1 Figure 2 The temperature, μ °C, of a second cup of tea t minutes after it was placed on a table in a different room, is modelled by the equation Laverage the room temp 0 -18 where A and B are constants. Figure 2 shows a sketch of u against / with two data points that lie on the curve. The line 1, also shown on Figure 2, is the asymptote to the curve. Using the equation of this model and the information given in Figure 2 (find an equation for the asymptote /. -trg t>0 is 24°C 04 142 (1) 4:10.7² DO NOT WRITER €

32番.gutanteeの文型を教えて下さい。 受動態なのに後ろに名詞が来てるのは第四文型をとってるのですか？

site site site site -site site site Yes . No .. No No 01/29 His decision to help out the poor)was (). b. volunteer a. voluntary V30 Her act was () and never planned. a, tolerant b) spontaneous SECTION #5 ｢制約・強制・禁止」 | 063 を保証する c. captive 31 My friend at the barbershop cut my hair for (). a. freedom b. liberty free 1/36 Drinking and driving is (). c. obligatory 0032 People are guaranteed () of speech under the law. a, free c. freedom b. liberal 33 The prisoner was () when the war was over. a. reinforced b. compelled liberated 34 The soldiers were held as () and treated severely by the enemies. captives a. tolerated b. hindered V37 Eating is() in the movie theater. a. liberty b. capture 135 I was given ( ) to leave the class for a dentist appointment. permission b. generosity c. captivity prohibited a forbidden b. removed 38 My friend never for what I did to her. a. promoted h prohibited c. abandoned forgave a. b. C. C. C.

回答わかる方いますか?

16 次の(A), (B)の問いに答えなさい。 (A 次の英文を読んで, 文意が通じるように, 2回~16時に入れるのに最も適切な語(旬) を0~ から1つずつ選び, 番号で答えなさい。 In 2019, the Rugby World Cup was held in Japan. Rugby wasn't very popular among Japanese people until just a few years ago. In the *previous World Cup in 2015, Japan won a game against South Africa in a dramatic *upset victory. And in this World Cup, Japan reached the final eight. The Japanese national team made history and has 0 taken 5@ brought Do you know who started Japan's *bid to host the Rugby World Cup? There was a man who had a great passion for rugby. He was a * diplomat named Katsuhiko Oku, In 2003, he was suddenly attacked and killed by *terrorists in *Iraq, He was 290 engaged O prepared He started playing rugby at a public high school in Hyogo. He also showeda great talent for rugby at Waseda University. At that time, he had a dream to be a diplomat and work internationally in the future. After deep *consideration, he decided to 30O continue to However, he *encountered rugby again at Oxford University, and he tried hard to 15 develop his skills there. He became the first Japanese player of the Oxford rugby team. After that, he kept his love for rugby in his heart and *devoted himself to Japanese rugby while he worked on the 31) | 0 social Six years after his death, it was decided that the Rugby World Cup would be held in Japan. O given rugby into the hearts and minds of Japanese people. O satisfied in *reconstruction support activities for Iraq. 10 @ keep off O give up rugby then. O necessary O international stage. [注) previous (前の) terrorist(テロリスト) consideration(熟慮) upset(番狂わせ) Iraq(イラク) encounter . (……に出会う) bid (宣言 reconstf uction (復興) diplomat (外交官) devote oneself to (…に身を捧げる)

こういう事ですか？合ってるか教えてください🙇‍♀️

1t+2)Gx-2つct4) ズナ8 3 ② (ス-3) (ズ+3て+9) ズ-27 3ス+3は)(ス3_3c4で9ば) =ズ+27g3 2 (22-3a)(4で+6ax+9a) - 82ー27a