0が含むか否かはどういう基準ですか？

318 基本例題188 関数のグラフの概形 (2) ･･･ 対称性に注目 ①①0 関数 y=4cosx+cos 2x (-2≦x≦2π) のグラフの概形をかけ。 基本 187 指針 関数のグラフをかく問題では, 前ページの基本例題187同様 定義域, 増減と極値､凹心 と変曲点, 座標軸との共有点, 漸近線 などを調べる必要があるが,特に, 対称性に注 目すると、増減や凹凸を調べる範囲を絞ることもできる。 f(-x)= f(x) が成り立つ (偶関数) グラフは f(-x)=f(x) が成り立つ (奇関数) 解答 ① y=f(x) とすると, f(-x)=f(x) であるから, グラフはy軸 に関して対称である。 この問題の関数は偶関数であり,y'=0, y" =0の解の数がやや多くなるから、 の範囲で増減凹凸を副べて表にまとめ, 0x2におけるグラフをy軸に関して に折り返したものを利用する。 =–4sinx(cosx+1) =–4(cosx+1)(2cosx−1) 0<x<2πにおいて, y = 0 となるxの値は, sinx = 0 または y' 3" y'=-4sinx-2sin2x=-4sinx-2・2sinxcosx 2倍角の公式。 y=-4cosx-4cos2x=-4{cosx+(2cos2x-1)} 20 : cosx+1=0から x=π y" =0 となるxの値は, cosx+1=0 または2cosx-1=0から(*)の式で, CoSx+120 5 に注意。 sinx, 2cosx-1 の符号に注目。 (E よって, 0≦x≦2におけるyの増減, 凹凸は,次の表のようになる。 (*) - x= お π 3 π " 3 0 3 2 18 +1 π, ↑ π 0 20 3 -3 π *** ++ 軸対称 グラフは原点対称 |53+0 32 π 3″ : y 5 ゆえに, グラフの対称性により, 求めるグラフは右図。 +0 [参考] 上の例題の関数について, y=f(x) とすると よって, f(x) は2πを周期とする周期関数である。 C 5 ◄cos (- (数学ⅡI) 2π 7 (OR) (200 (2)y= 重要 189,190 y=-4sinx-2sin2xを 微分。 - -2π 5 ミル = COS π 3 YA 15 3 f(x+2)=f(x) この周期性に注目し,増減や凹凸を調べる区間を 0≦x≦2に絞っていく考え方でもよい。 ←数学Ⅱ 参照。 70 -3π sink Xの 練習 次の関数のグラフの概形をかけ。 ただし, (2) ではグラフの凹凸は調べなくてよい。 188 (1) y=er-¹ (-1<x<1) ex sin 3x-2 sin 2x+sinx (-75x5) [(1) 横浜国大〕 Op.325 EX161 重要 方程式 指針陰 中 1²2 解答 方程式で は成り立 よって, 8-x²MC 0<x<2. y' = √ y=2 y'=0と また、C 0≤x≤ なる。 よって [ 参考 した 練習 189

レポートの間違ってる問題の正しい答えがわからないので教えてください

[ ] Idea Sharing ワンマン運転の交通機 にはどんなものがあ りますか。 脚中字町海岸 野田玉川 鵜住居 8 FAO EMPER 1/ 201 2860 WORKS 宮古短大 意しま 羽田 る 払川 豊間根 陸中山田 B 浪板海岸 岩手船越 大橋 吉里吉里 とりで 白井海岸 田野畑 岩泉小本 摂待 ofte 18-03 ゴリアス線路線図 レイルウェイ / Railway ust コゥスト/ parèrt 5 宇都宮聖花さんが 自分の仕事について 話しています。 Hello, everyone. My name is Utsunomiya I'm a train driver for the Sanriku Seika. Railway. The railway runs along the Sanriku Coast. I have to operate the train by myself, so I am always busy with my duties. However, I like the beautiful scenery from the train windows. I can see and feel the differences of the four seasons. rain Driver in Santia Truodo prilor velbega erit ai mont doin 次の日本語に合う語句を、 本文中から探しましょう。 ････を運転する / 職務 / 風景 2 三陸鉄道 Key Words 地震 /…. に損害を与える In 2011, a terrible earthquake severely damaged the Tohoku area. I'm originally from Iwate and I became a train driver in Sanriku. Here, the railway is a symbol of the area's revival. Everyday, I enjoy face-to-face communication with passengers. Through my work, I will help the local people for as long as possible. 1 A Train Driver in Sanniku F Idea Sharing あなたは地元で働きた いですか｡ それとも他 の地域で働きたいです 1 千 次の日本語に合う語句を、本文中から探しましょう。 東日本大震災で被害を 受けた三陸鉄道 severely /svtarli スイヴイア 5 originally aridyanali アリー revival /nvåryl リウ face-to-f /fénstafers. フェイスト commu /kamju コミュー passe /pies バセ for pos To

四角の1番と2番の答え教えて頂きたいです！！お願いします🤲

Try it out! ( 10 eno-Ju )内のどちらの語句が最も適切か考えてみましょう。 1. “This is my email address." "Thanks, I ( am going to / will ) send the pictures later." 2. The sky is getting bright. I think it ( is going to clear up / clears up) soon. 3. "The first train for Sendai (departs / departed) at 5:31 on Sunday." "Let's catch it." 4. "Are you free this evening?" "Sorry, no. (I'm meeting / I meet) Richard to discuss our project." 2 ( )内の語句を並べかえて、会話を完成させましょう。 1. "I heard Mike (buy / is / new computer /a/ going / to) this weekend." "I envy him! I want a new one, too." 2. "(a / charity event / are / on / holding / we ) July 18th.” “Great. I will definitely come." 3. "(rises / at / the moon / 6 p.m.) today." "Let's go outside and watch it together."

行列の積で交換が成り立たないのはわかるんですが自分は(A+B)でくくれるので先に(A+B)をもってきました くくるときにどちらが前とかの条件とかってありましたか？

=BA が成り立つときは, A DHOL 01 CHARIT 行列 A, B の計算 ② は,文字式 A,Bの積とは違って, 一般に AB≠BA 00K=XA A²+AB-BA-B²=A(A+B)-B(A+B)=(A-B)(A+B) -1 0 -1 1 0 (24H 24H + -5 -5 0 −1+1 4+0 =[ -1-14-0 2-0 -5-(-1)][1+1 --2²41124-188 = [ 2+0 0 -5-1] b]=AX 8-32 =17 04 -6 32 一般に, ABBA であるから

答えと　そうなる理由おねがいします🥲

9 "Has Nancy arrived yet?" "Not yet. She ( ) come by now." 2 ought to 1 has had to 3 should have 10 The longer the members of the party were lost in the mountains, ( to freeze to death. 1 they were more likely 2 they were less likely 3 the less likely they were 4 the more likely they were (東京電機大) 4 would rather (国士舘大) ☐☐11 Mike kept me ( 1 wait ) for many hours last night. 2 to wait 3 waited 4 waiting (8) 12 I must ( ) that I didn't work hard on my final report. 2 admit 3 forbid 1 request 4 complain (南山大) ) a ☐☐13 Rats have been widely used in medical research because they ( number of traits with humans. 1 are sharing 2 have shared 3 shared 4 share (法政大) 14 Your help will enable ( (畿央大) Chlidowme finishing 3 me to finish ☐☐15 You will ( 1 be laughed ) by John. ) the job soon. 2 me finished 4 for me to finish 2 be laughing 3 be laughed at 第4回 4 laugh (常葉学園大 動詞述部に関する問題 ② 17

下線部の和訳を教えて頂きたいです🙇‍♀️

“I call them and say I'm going to leave the boxes outside the front door. Thev usually leave them out for a few days to make sure there aren't any germs* before passing them out to the residents. She has now sent packages to 23 nursing homes in the Philadelphia area. 25 “Cheering them up makes me happy. Even if it's just for one day." Initially, Hita was purchasing items with her own pocket money, but figured if she wanted to make a larger impact, she would need more money. As news spread of her good deed, more people wanted to help. “Tve heard from a lot of people and people are sharing on social media. 'They ve reached out saying, ‘You've inspired me to do a similar project in my area. 0 ううう The second-year high school student has created a GoFundMe* account to help make even more of the thoughtful packages.

大学での宿題です。 誰か代わりに解いて下さい😭〜

Exercise 2.3 For or Since? Complete the sentences about successful people. Circle for or since. 1. Blake Mycoskie has started five businesses(since/ for he graduated from college. 2. Bill Gates has worked part-time for Microsoft and part-time for the Bill and Melinda Gates Foundation since / for the past several years. 3. Bill Gates has given over $28 billion to charity since/ for 2007.. 4. Oprah Winfrey has helped poor people since / for many years. 5. Since / For the last several years, the actor George Clooney has spent a great deal of time trying to help end the conflict in Darfur, Sudan.

右下のクエスチョンの30.G-1 .G-2.Q-6 が分かりません。 至急教えていただきたいです。m(_ _)m

ara light, I heard someone calling, “Hi! Where are you 10n May 7, I started on my bicycle tour from Around the World on a Bike 1o Dennis was sharing a house with a friend and G-1 the Los Angeles airport.2 When I stopped at a tra作。 15 his wife, who happened to speak Japanese.1 I had dinner with them-fried chicken and fried potatoes headed?"3 It was a young man on a bicycle. with ice cream for dessert. (2Dennis took out 92 4I said, “New York!" something for me to read: it was a list of people who 5 Looking a little puzzled, he said, “Where did supported traveling cyclists. Dennis explained 20 that I could stay in any one of their homes with you say you're going?" free meals. "New York."” 4The directory was very useful. iWhile cycling ●While cyeling =D While 1"New York!" he repeated.) 8I could hardly understand his English; alll』 1 was cycling across America, I made full use of it, visiting 20 ●make ) use of ~ homes and meeting many friendly peoplel6Meeting 与use ~ ●igure out ~ 与understand ~ could figure out was that his name was Dennis and 25 Dennis and receiving this great gift on the very first TE that he was inviting me to his house.9 After a day of the trip made moment's hesitation, I accepted. me wonder at the mystery of human Montreal ア19 7/10 life!7So much of life Boston Chitago 30 depends on luck and リスへ Denver 24 Kansas City York chance. Grand Canyon /1 washingy DC 512 Nashville Los AngelesFlagstaf ーは自転車以外による移動 At the Grand Canyon, U.S.A. マイスクリーム fried (fraid ice cream [ais kri:m] dessert [dizd:rt] でート 転にする人 cyclist |sáikist] directory darekiari ほど~ない hardly [há:rdli] figure |f M える ずンス Dennis [dénis] hesitation [hèzitéifon] ためSい mystery |mistarilテ。 O-4 Where did Hirata meet Dennis? 0-5 How well did Hirata understand Dennis's English? 30. depend on ~ It all depends on the weather. G-1 Mr. Green, who was born in Japan, lives in New York now. G-2 Halloween is a good time for everybody to dress up. Q-6 What did Dennis give Hirata to read?

この問題なんですけどなぜ途中式で 10:6=5:3 よってDC＝分数になるんですか？？

EX 49° AB=4, BC=5, CA=6 である △ABC において, ZAおよびそのが 二等分線が直線BC と交わる点を, それぞれ D, Eとする。i 354 会角形の角の二等分線と比 三角形には, 重号 この重要な点 AB=10, BC=5, CA=6 である△ABC におい て, ZAおよびその外角の二等分線が辺BCまた はその延長と交わる点を, それぞれ D, E とする。 このとき,線分 DE の長さを求めよ。 基礎例題49 ら。 10" 三角形の D Piay Back 中学 B CHARI QGUIDE) 三角形の角の二等分線と比 (線分比)=(2辺の比) 三角形の3辺の垂 定理3 三角形形 1点で [図 1] ADは ZAの二等分線 [図1] 内角の二等分線の定理 BD:DC=AB:AC [図 2] AE は LAの外角の二 等分線 → 外角の二等分線の [図2] A iの食代 A A この三角形の3辺 いい, 外心を中心 [定理3の証明] の交点をOとす 定理 B D CB C BE:EC=AB:AC を利用する。 日解答田 よって OB AD は ZAの二等分線であるから ゆえに,点Oは BD:DC=AB:AC したがって,A ゆえに BD:DC=10:6=5:3 3 DC= 5+3 よって 3 15 I三角形G -BC= -×5=- 8 8 -10、 6. また, AE は ZAの外角の二等分線で B B D 5 あるから BE : EC=AB: AC Piay Back のゆえに BE:EC=10 :6=5:3 中学 C よって BC:CE=(5-3) : 3 10- C B =2:3 CE-ac-3- B 三角形の3つの内 ゆえに "E 6 =BC= 2 15 ×5= -10 定理4 三角形 2 -3BC=2CE したがって 2 DE=DC+CE 1点で 15 15 8 75 2 8 この三角形の33 といい、内心を中 求めよ。 機分DEの

一応埋めては見たものの自信がないのであっているか教えて頂きたいです。また、空欄のところもよく分からないので教えて下さると助かります。 よろしくお願い致します。

2つの文がほぼ同じ意味になるよう、[ を含む文にすること。 ]に適切な語を補い英文を完成させなさい。分詞構文 2 ロ1. Since Xdidn't know what to say, I kept silent. ( Not 口2.AS Yhad got up late, I failed to catch the usual bus. ( Haring )( g 口3. While we were staying in the old town, we visited a famous old church. ( While ) ( staying) in the old town, we visited a famous old church. ロ4. AsYhad not eaten anything that morning, I felt hungry around 10 o'clock. )(Ahowing )what to say, I kept silent. yot)up late, I failed to catch the usual bus. 13(Not )( having ) ( eating ) anything that morning, I felt hungry around 10 o'clock. 下線部の内容を分詞構文で表しなさい。 3 総合口1. While wě were discussing the plan, we noticed the sky turning black. Discusoing the plan we noticed the sky turning black. 口 2. AterThad taken a bath, I started reading my favorite book, Taken a bath I started reading my favorite book. 口 3. A man went to the station staff and complained about the train delays. A man went to the station staff,