この問題なのですが答えが1/2になるのですが3/2になってしまいます。どこが間違っているのかを教えてください。

次の図形の面積を求めよ. (1) 曲線y=x(x-1)(x-2)と軸で囲まれた図形

（1）の（ウ）の問題の解説で 黄色いライン部分の180°はなぜ消えたのですか？

256 基本例題 158 和と積の公式 (1) 積→和,和→積の公式を用いて,次の値を求めよ。 (1) sin 75°+sin 15° (7) sin 75° cos 15° (2) △ABCにおいて,次の等式が成り立つことを証明せよ。 B C COS COS 2 A-AL 指針 解答 (1) (7) sin 75° cos 15° = (2) △ABC の問題には, A+B+C=² (内角の和は180℃) の条件がかくれている。 A+B+C=元から、最初にCを消去して考える。 そして、左辺の sin A+ sin B に 和 = sin A+sin B+sin C=4 cos- (1) sin 75°+sin 15°=2 sin- = 1 1 =1/(1/2/20 +cos 20° cos 80°= cos 80 よって cos cos 80° + 15/12/20 cos 80°+ 1 2 1 -(sin 90°+sin 60°) 2 -{sin (75° +15°)+sin(75° -15°)} 2 積の公式を適用。 2 1 () cos 20° cos 40° cos 80°= ={cos 60° +cos(-20°)}cos 80° 2 2 75°+15° 75°-15° 2 COS 2 & few eco +302 =2 sin 45°cos 30°=2. ATTE SY - cos 80° + = 1 -{cos 100° +cos(-60°)}= sin A+sin B+sin C=2 sin- 1/(1+2)=2+1/3 1 (7) cos 20° cos 40° cos 80 2 2 1+1=4 cos C 2) mi p.255 基本事項 1, 2 重要 167 cos 20° cos 80° 1 4 cos 80° + cos 100° + 4 cos(180-80°)+cos 80°- = √√3√6 (8+0202 A+B =2sin- 2 229 230 (2) A+B+C=²5 С= π-(A+B) Peop+(a+b)800 ゆえに sin C=sin(A+B), cos= cos(7_A+B) = s =sin- 2 A+B A-B 2 2 COS COS -cos 4 A 2 2 COS cos 80° + 2+√3 A = 2cas-20064/cos(-2) =2 A-B 2 B C 1/2 cos/20 COS 4 練習 (1) 積和,和→積の公式を用いて,次の値を求めよ。 158 (P) +sin 2. +cos 1 1 8 8 B - A+B 2 A+B 2 A+B) 2 解答 145 7045050 2倍角, により の形 CH 与式大 ここ

積分できるのって①のパターンだけですか？②や③は①のように変換しないと解けないのですか？

x=b x = a Ax=b Jx=a O foo dx (2) few dx 3 pg=1 your foodx. XM

minutesとminutes' どんな違いがありますか

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)

a few parents の訳が「かなりの数の両親」になっていますがなぜでしょうか。 「ほとんど 〜ない」という訳しか分かりません。😓

【訳】「私を一日中待たせるつも He was greatly surr 6. 【解答】(2 elected (→ POINT ① elect 2 【訳】「自分が社長に選ばれて、初 7.【解答】2 heard (→ POINT V7. He couldn't make hi 1 hear (2 【訳】「彼は列車の騒音の中で声を 8.【解答】0 force (→ POINT 0) 8 Quite a few parents 【訳】「かなりの数の親が子どもい 0 force 2 【解答) 1. [Keeping your guest waiting for 2. [Broken glass remained scatter 27 一 第3講 3 【解答】 Don't leave these tools lying (

答えを教えてください🙏後、解き方も教えてください🙏

大間番号2|次の(1)~2的の空欄に入れるのに最も適当なものを,それぞれ下の 0~0のうちから一つずつ選べ。 (1) Please come into the dining room and help 11 to food and drink. () you (2) your (3) yours 0 yourself (2) That's the woman 12 husband was on TV last night. (1) that (2) who (3) whose 4) which (3) Today's TV program was 13 interesting than last week's. (1) more 2) much 3 rather (4) not so The poor child didn't know 14 his mother. 0 where finding (2) where to find 3) he found where sd ) 4 his finding where (5) A cold wind 15 for the last three days. 0 blows (2) blew 3 is blowing 4) has been blowing

（2）は無視でお願いします！ （3）がわかりません！3枚目の写真が（3）の答えなのですが、僕の答え（2）と合いません..多分途中の部分分数分解から、積分して対数とって、対数の性質使うあたりがおかしくなっているのですが何が間違っているのかわからないです..指摘おねがいいたします..

-Jo In cosn x dx とおくとき (1) IをIn-2で表せ。 (2) 1o,h2,1314を求めよ。 (3) 次の定積分を求めよ。 dx cos3 x

こういう問題ってどういう風に考えて解いていますか？ 英語が苦手な者としては、文法的には何番を選んでも違和感ない様に思えます

次の(1)~(10)の空所に入れるものとして最も適切なものを1つずつ選て 番号で答えなさい。 ) sure that all the windows are closed. 1. Take 2. Got 3. Make 4. Show (2) I had very( money left. 1. many 2. few 3. little 4. some (3) I wish I ( ) be with you. 1. can 2. could 3. am able to 4. will be able to (4) Getting older is not ( )a sad thing. 1. barely 2. easily 3. already 4. necessarily ) that I can't remember her first name. 1. shaming 2. shamed 3. shameless 4. ashamed (6) Our bodies are made up ( ) many tiny cells. 1. on 2. in 3. of 4. to (7) I warned the children ( )with fire. 1. not play 2. not to play 3. playing not 4. not playing (8) Jack's jokes always ( )me laugh. 1. get 2. make 3. cause 4. lead (9) "You look( ). What's wrong with you?" "T have a temperature and I feel cold." 1. honest 2. pale 3. pleased 4. flexible (10) "Did you see the accident?" "Yes. That's( )I was hardly surprised to hear the news." 1. because 2. exactly 3. known 4. why

f(x)=aの解の個数のところです。 (3)のまるで囲ってあるところの説明の書き方が分からないので教えていただきたいです。

1[Ch352]f(x)=D2(sinx)^2+4sinx+3cos2xの最大·最小, f(x)=aの解の個数 関数f(x) =2sin’x + 4sinx+3cos2x について,次の問いに答えよ。ただし, 2新 a,ニー 0Sr<2x である。 (1) = sinx とするとき、 f(x) を1の式で表せ。 (2) S(x) の最大値と最小値を求めよ。 また, そのときのxの値をすべて求めよ。 (3) 方程式f(x)=aの相異なる解が4個であるような実数 aの値の範囲を求めよ。 (fw-2x+45iくける(1-207x) -2 5X+45ix+3~6si7X =- 45i5X+9sin > --4ゼナ4t3 【岩手大) (21 0ミC<Zたより few=-f(ゼーt]3 -4(t-ザ-ト3 tーまに最大手 t-イて最小 -4(-予料 nc X- =-14 tーdoき =-9+9 SioC--」 ミ メ訳でM4 X死でm-S t=1,-1oとき解はつしか でかい ttlrlである。 解つおき支点が27。 て 3くa<4 4 t