僕は面積Sを微分して求めようとしたのですが、答えの2aの2乗の場合が極大値の時になってしまいます。どうしてかなのか？それとも自分のミスなのか？教えてください！

REVI 34. 処理方法が本問と全く同じ基本問題 O を原点とすぁる ァy 平面上で. 2 点 A(2g, の, T(z 0) (0くZくの を通る直線 AT と直 株 ニーァ との交点 P に対し. へOPT の面積を S とする. (1) 5を 各及e表で (2) Zを固定し. /を7>Zの範囲で動かすとき, S の最小値を求めよ.

英語の長文問題です。問3、問4の答え2.4、2であってると思いますが⁇ 問3の根拠→L4〜6、L39〜42 問4の根拠→全体的に見てそう判断しました。 答え違くない⁇と思ったら何番になるかも教えて下さい💦お願いします🤲

1 m bits 8 ,。 eating ha Y。 ing people'8 6 cle to re8 旭 You are studying 科Yan 0 her gaV@ nutrition. Your もGaC open人 od re8i informafion available at fast fo Americans the busy jifestyle of eve that than COO 2 to be higher in fat and ls Many health experts beji Ss more CO Jeads to eating out at restaurant: king and eating od tend 6 tf home. Unfortunately, restaurant fo rts_ believe that | に exDe choi eals. Health Jesterol than home-cooked Tn 1 i can make ition 1 eopJe becomn, re aware of nutr better choices_when_selecting_what to_eat。 Many restaurants provide petker choi 3 ent e goVernrn iti ntent. Th nformation such as calories and nutrition CO 1 the le are uS1ng asked a study team to examine whether peoP nformation they are given. 陣 局/ mn fact, Jaws and regulations have been created 了 tried to peopes eating habits. Some local governments have ( ules abou adver好sennents for unhealthy food. They have also made r に rOaC what foods and drinks are sold at schools. One successful app taken was to force food companies to use labels explaining what 上沼と7 exacy was in the food they sold. The laws required that the calories る contained jm food and drinks have to be shown. This was good for Sixahom、 foogd naz peope buy and cook at home. Many local governments SCarted reguiring that restaurants show the calorie information. Tn 7acz one Survey found that 54% of large restaurant chains showed 太e calorje mformation on their menus. Tjhe sudy ream hoped to find that the information required by d their awW2areCTCSS Of d about nutrition > 交 10 15 20 25

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間誠蘭 ルルoomxe 1 分 56 秒を目標に読みなさい。 UDGI2NJTgGWGiGMI BrazihWithiaiBopttatodef18 milhen_asiof.20108 Back in the 1960S, it had various problems that are often seen in big cities throughout the world, such as busy town streets and a lack of green SDace. ての不足 mayor in 1971, succeeded in solving these problems. Lerner carried out a series of big reforme。 But Jaime Lerner, who became First, he changed the city's busiest town street into a pedestrian Zone. Next, he planted flowers and trees, and put benches in parts of the 0 It became a popular meeting place for people. Although local Shopkeepers thought these changes would hurt business, they soon found out that actually fe were able to make more profit. After thiS success、Lerner tried to solve the problem of public transportation. He connected some buses together so that they could hold more people at a tme. Thanks to tm there were no more traffic Jas during rush hour. _He ・ Je to make EEこ By changing a number of river areas into parks, he crwel Jot t more mee Space in the city. He also started to educate people on how to

2枚目の、28.6と71.4は、どういう計算をしたら出てくるのか教えてください🙇‍♀️🙏

0 0OE | 0g | aog OPT 001/| ) aog be ?OSnO 吐姜| OzH OSno | (8 "もマ8T = OZH 09r = YOSnO コッッ ~エを受-ホ2国の% "80gふ20g "0Pふ09 ゝコ友34300 涯家披の(TO)遍泊昌・

問3 6、問4 4で答え合ってると思いますか⁇ 違っていたら何番か教えてください💦

のまり) Your study group 1S DTG 3 Thoughts on "Welcome to the Ne1 the fictional story beloW. ing a DOSter presentation entitled *Ou、 Daring on dP using information fron 8! Race fter our neighbor。 for almost a Ye8T NR S The house next door Sat Co Soon my family grew used to it | 人 e "For Sale" Bign in the front yard. and 議 3 0 We kk Tnew Yery curioug 本 our new | ne day, the si 時 aG・. my parents | neighbors. 1 hoped they'd have children my OWT 8B @e whi i is phone. | を ” sa dad while looking at his p rugged. “We find out Soon said my RAかho nort weekend, a moving truck pulled up. Let's meet the | 1 1 neighbors!” T said. later? | <Theyre busy moving in,” said my mom. cWell meet them later 8 times Saw Buf later never came. From my 9 4 308s. 6 neighbors outside. They were a fun, hapPy COUP al new cars on the weekend, they inyited friends over. We SaW RGMeP9 Street and heard 18ughter next door. BOSS Whenever T asked about meeting the neighbors, TYP に too busy. My mom took a new job at her companツ and she iA hd ate. My dad started on a new project designing a large BuMMdingifor a university. One Sunday, pushed them a ittle. “Mom and Dad, you always say to be giendly to new kids at school, right?” "Of course, Mary,” my mom answered. “Youre jgnoring your own advice! 尼s been months, and we havent welcomed our new neighbors yet!” "Now's not a good time, Mary,” she said. 和T have an important meeting tomorrow.” “TI just take 10 minutes,” 1 said. “Your mom's busy, Mary,” said my dad, “And you have homework. 民W youre right. TI go sayhellonow” 2 T was disappointed not to go Aglad wed finally learn more about Tnen 20, 30, and 40 minutes went by before “Theyre friends withJeremy!" he said t 10 15 20 25 30

この問題の答え、問1 5、2、3、4、1 問2 2 で合ってると思いますか⁇ 違うっていたら何番か教えてください💦

7 ee の Your study group S DrG う 和Thoughts on "Welcome to the Neig the fictional story beloW. 一 after our neighbors SI r almost a ye8T が y family greW used to it front yard. ster presentation entitled <Ou、 1 0 ェ ・ DO hood"” uSing information from hbor」 The house next door sat empty 司9 moved away in the summer of ya le" sign in the and no one was interested in the very CuriOUB about our new One day, the sign Wa8 gOne. 1 greW Es M Buf mmy Darents > children my oOwWT 8 6 4 Eh 0 B said my dad while 了 了 7 Re を weekend, a moving truck pulled up. ets meet the | neighbors!” T said. “Theyre busy moving im, Buf later never came. From my neighbors outside. They were a fun, hapPy couple in their 908. weekend, they inyited friends over. We saW several new cars on the Street and heard 1abghter next door. Whenever T asked about meeting the neighbor8。 too busy. My mom took a new job at her companツ and she Often Worked Jate. My dad started on a new project designing a large building for a Unrversity. One Sunday, ] pushed them a itlle. “Mom and Dad, you always say to be friendly to new kids at school, right?? "Of course, Mary,” my mom answered. “Youre jgnoring your own advice! HEs been months, and we havent welcomed our new neighbors yet!" “Now's not a good time, Mary,” she said. “] have an important meeting tomorrow.” TI just take 10 minutes,” 1 said. “Your mom s busy, Mary,” said my dad.“ And et SW youre right. TII go say hellonow” 6 + was disappointed not to go RUE glad wed馬 mly1 上 our neighbors. Soon, 10 minutes went by and my dad Mk Thnen 20, 30, and 40 minutes went by before he “Theyre friends withJeremy!” he said to 5 ? said my mom. cWel meet them later” my parents Were window, I sometimes saw the 1 15 20 25 30

この問題解説お願いします🙇‍♀️ (1)でOH＝2√abと出したので、OH＝AB＝2√2、同様にBC＝2√6までは出せました。その後が分からないです🙏🏻

(3) 2=1, の一2 とする。図3のように, 点Qを 中心とする半径3の円Qがあり, 円Pと円Qは 外接している。 また, 円Q は直線 AB に点Cで接している。次 のしエイに当てはまるものを, 下の⑩0. ⑩の3 6⑥ 点Pは図 3 において, 直線 0Q のしエ |にあぁる。 せ ⑩ 上側 ⑰⑩ 下側 図8 円 0 と円 P の接点を R。 円Pと円 Q の接点を Sとする。さ5らに、思Rにおける思の接机と 直線 AB の交点を , 点 S における円 P の接線と直線 AB の交思を U とする。 とのとき, 誤っているものを, 次の⑩-⑨のうちから一つ選べ。 Lキ ⑩ 点生は線分 AB の中点である ⑩⑪ APTUは鋭角三角形である ⑳ へOPT は直角三角形である @ 直線 RT と直線 SU の交点は直線 BP トにある 公式・近法集 計略目

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この問題教えてください。

LESS0N 1 一- 文の種類 呈| compre Iprehension Check! Answer the following question 1 < 1 定文杏定文 | 2 いろいろな蜂問 et are Bob and Adko tdng aboue 0 還 中 半 2 at home。 b. How to make breakfast easily. 賠CE is important. d. Why they cant get up early. 避esding Answer the following questions. 時 6 」1] 空所④),(③)に入る回 Read the passage and answer the questionS・ t に入る適切な語をそれぞれ[ ]内から選びなさい。 作W 人@ Akiko : Hello, Bob. N [ did, dont didnt ] Bob : 軸、Akiko. Did you have breakfast this morning? 3 で [ be, Jets, dont ] 12] 下上のの具体8な内宮を日本で条に有明しなさい。 (6 Akiko : Breakfast? Yes, I did. Bob 。: So、you concentrated in VOur morning classes, ( ① ) 5 You? (6点, Akiko : Yes, 1 did、 Why? What are you talking about2 Bob : Well my host mother told me ②an interesting Story this PE 0 UaBroiag 1 morning。 She said、“The newspaper sayS that studentS =リーの fo every morning? Answer in English. 8 COncentrate on their Class work better when they eat qasswode 。 She advised him を | [5] 本文の内容と一致するものをa 一 cから1つ選びなさい。 6 breakfast." Akiko : Well。breakfast gives us energy and then our brains work better, 』 think. Bob :T agree.If our brains work well, we can concentrate 1 a. Akiko did not have breakfast this morning. b. Akiko thinks she iS a lucky girl Class. c. Bob usually has a Japanese-style breakfa 3 am ル Akiko : Thas right So ( ③ ) eal breakast every day. に @ Bob :My host mother makes me 4 nice breakfast every 后] Li 3 istening Quiz Listen to the recording and choose the best option. 介 4 morning, so T am lucky. Akiko : Yes, you are. ④①Which do you have, a Western-style breakfast or a Japanese-style breakfast? s Bob :I usually have Japanese food such as rice 75の sのの, 7Zgのを7 and ヵg77のBut a few days ago,I couldmt eat my breakfast because I got up too ]ate. Akiko : Oh、You must always get up early to eat breakfast. Going to bed early and getting up early iS very important. s Bob : We say "Early to bed, early to risey in English. Akiko : 1 see. 783 ozのs) 【59e. a. Akiko. b. His father c.His host mother d.His teacher a. He was late for school. b. He couldnt eat breakfast. c. He got up earIy. d He was absent from school なるほど。 *本書では。 アメリカ発音 イギリス オーストラリ7発音の音声を扱っています。CD トラック番号の横にそれぞれを 団|・隆| ・限| でがしてでいます。