数3の媒介変数のとこなんですけど… Ｙの範囲を出す時に判別式を使ってると思うんですけど、tの実数が存在するとはなぜわかるのですか？

Check 曲線の媒介変数表示(2) 介! 例題 76 次の媒介変数表示は,どのような曲線を表すか. (tは媒介変数) 13NONG|x=2(t- x = 2 (t + + + + 1) 2(12) (1) 1+t² BU (2) |y=t-1 2t 1+t² 考え方 媒介変数を消去する. 分数式を含む場合は、t=(x,yの式) や f2=(x,yの式)に変形する他に、 することなどを考えてみよう. また、含まない点がある場合があるので, x,yの変域に注意しよう. 2-x 2(1-t²) £y, ²²=²+2 (x-2)(x+2)²=2-x より、 解答 (1) x=- 1+t2 ONGES x=-2のとき、 2t ① を代入して整理すると. y=1tt2 (59 より 2-x 2y 3..... OPOK, Hav1+. x+2) t= x+2 /2y^2-xRoo 4y -2-x+miaky, = x+2 ② を①に代入して、 x+2, x+2 0 2009 2 4y²=(x+2)(2-x) sin204y=x²+42000nia-1-| -2 ここで, x=-2 とすると, y=0 より 点(-2, 0) は除く. ①より,xキー2のとき,f=2-X≧0 だから、 x+2 -2<x≦2 2t また, y= より yt2-2t+y=0 ・③ y=0 のとき ③の判別式をDとすると, 9 1=1-y≧0より、-1≦y≦1 (y≠0) y=0 のとき, ③より, t=0J したがって,x,yの変域は, -2<x≤2, -1≤y≤1/√#Hoda よって与えられた媒介変数表示は, 楕円x2+4y2=4 (点(-2,0) は除く) を表す. A * 1)24(-2) 除く点 π

英検2級のwritingです！ 添削お願い致します！！ 少しでも良いのでアドバイス頂けると助かります！！

以下の TOPIC について, あなたの意見とその理由を2つ書きなさい。 POINTS は理由を書く際の参考となる観点を示したものです。 ただし, これら以外 の観点から理由を書いてもかまいません。 語数の目安は80語~ 100語です。 解答は、 解答用紙のB面にあるライティング解答欄に書きなさい。 なお,解答欄の 外に書かれたものは採点されません。 解答が TOPIC に示された問いの答えになっていない場合や, TOPIC からずれて いると判断された場合は, 0点と採点されることがあります。 TOPIC の内容をよく 読んでから答えてください｡ do get a job valuable f 8 QUESTION Pentata various Today, more and more young people are starting their own companies. Do you think this is a good idea? / Freedom Income Point: Experience 22 "I think that more and more young people are starting their own companies is good. I have two reasons for my opinion. First of all, I think that it is good for us to work what we like. It is valuable experience very much. And. We can rest favorite time. Second, we 28 (X 24 can be got much money. It is glad for us to do. If we have much money, we can buy various things. For These reasons, I think we should 09 start our own companies in the future. 88

英検２級のライティングです 見にくくてごめんなさい 受験の関係で8割5分くらい目指してます こんな感じで大丈夫だと思いますか？ あと文法等間違ってるところあったら教えて頂きたいです🙏

• POINTSは理由を書く際の参考となる観点を示したものです。 ただし、こ 以下のTOPICについて,あなたの意見とその理由を2つ書きなさい。 ●解答は,解答用紙のB面にあるライティング解答欄に書きなさい。 なお、 れら以外の観点から理由を書いてもかまいません。 ●語数の目安は80語~ 100語です。 4 解答欄の外に書かれたものは採点されません。 ●解答がTOPIC に示された問いの答えになっていない場合や, TOPICから ずれていると判断された場合は,0点と採点されることがあります。 TOPICの内容をよく読んでから答えてください。 TOPIC Today, some young people do not want to start working for large companies. Do you think the number of these people will increase in the future? POINTS ■ Income Opportunity Stress of electrit dorts uramapach

至急お願いします🙏🏻🙏🏻🙏🏻高2の英語の問題です。カッコ内に当てはめる語は合っていますでしょうか？間違えていたら訂正して頂きたいです。

[Check A] Fill in the blanks and complete the sentences. 1) My grandmother's smile always( makes) me feel happy. 祖母の笑顔で私はいつも幸せを感じます. 2) The guide dog(enables ) him to go to a lot of places. その盲導犬のおかげで、彼は多くの場所に行けるようになりました。

至急お願いします🙏🏻🙏🏻🙏🏻高2英語の問題です。1枚目の文章を読んで2枚目の問いに答えるのですが、私の解答は合っていますでしょうか？間違えていたり、不十分でしたら訂正して頂きたいです。

Today's newspaper reports that people 65 years old and older account for more than 25% of the total population of Japan. No one can deny that Japan is an aging society. However, the problem is that there is a shortage of care workers in this country. The newspaper says that low pay and hard work keep young people from working as care workers. In my opinion, it is necessary to offer much higher pay to them.

この答えを教えて欲しいです。🙇‍♀️

Level Passage : 2:30 Lesson 5 Jet Reading 22 ⑤ Questions: 2:00 Compared to dogs and other pet animals, cats often have lots of freedom. Many owners let their pet cats go outside whenever they want to. But where do they go? Does your cat visit your neighbor's house for extra food? How far from home does your cat actually travel? Cat owners have been wondering about such questions for a long time. 5 To find out where cats go and what they do, researchers decided to track them by putting a GPS (Global Positioning System) device around their neck. It is well known that cats are natural hunters. They often chase and catch *wildlife, such as birds and other small animals. It was therefore believed Hoor war301 that cats may go far from their homes to hunt. However, the research showed some surprising facts about cat *behavior. It seems that most cats 10 don't travel very far from their homes. On average, they move around two houses away. Owners were *relieved to hear this result because it confirmed that their cats do not cross major roads. There was another interesting result. One female cat walked more than 1 kilometer from her home. When the owner checked her GPS data, they discovered that the cat had gone to their old house. It showed that cats remember the past longer and more clearly than we think.(219 words) *wildlife 44 *relieve ~を安心させる *behavior Infogt) A Choose the best options. (2 points x2) According to the passage, which of the following statements are true about cats? (Choose two options. The order does not matter.) so svom i da a. They enjoy more freedom than other pet animals. imove sill niw nuo exentabilt o b. A GPS device was put around a cat's tail by researchers. c. They go far from their homes to hunt wildlife. Sanino sasd Juoda su v d. The research proved that most cats cross major roads. of Inboq bow it bean 17 s e. They may remember the past more clearly than we expect. Bewe )( B Fill in each blank with a suitable word. (2 points x3) ******* ******** Many owners let their cats go (¹ ), but no one exactly knew where they went and what ) the cats by using a GPS device. they did. In order to find this out, researchers decided to (² maswid Bai As a result, they learned that most cats didn't travel very far from their homes. One cat, however, walked more than 1 kilometer from its home. It turned out that it had (3 shows that cats have a better memory than people thought. ) its old house. This result sal al commaly to pound How Judw grinidman [catch/ forgotten / visited / outside /track/inside] Time ☆ ~1:45 ~2:00 ~2:15 ~2:30 ~2:45 ~3:00-3:30 Reading Speed X WPM 125 109 97 88 80 73 63 /10 Name Class No. 10 2015

この写真の、2、4、5、7、16、18が分かりません💦 どなたか教えてください🙏

1 Choose the appropriate word from the word box below to complete a sentence. (語群から適切な単語を選び、 意味の通る文を完成させなさい。) 知識・技能 1. Yes, go ahead. ( ) I use your bathroom? 2. You played outside a lot. You ( ) be hungry. 3. My mother ( ) often make cookies on Sunday. It's April now. It ( ) have snowed in Kyushu. It was sunny. You ( ) have taken your umbrella. My father is overweight, so he ( ) do more exercise. 7. He ( ) listen to his parents and always gets his own way. 8. Hasn't she arrived yet? What happened? - I don't know. She ( ) have missed her train. can can't may needn't should won't must 2 Fill in each blank with appropriate English words. (空所に適切な語を入れなさい。) 知識・技能 9. "( ) are you?" "I am tired." 10. "( ) won the race?" "Mike did.” 11. I was so tired, ( ) I gave it another try. 12. "Would you ( ) a cup of coffee?” “Yes, please.” 13. This is a non-smoking area. You ( )( ) smoke here. 14. "( ) were you absent from school?" "Because I had a cold." 15. We help with the housework ( ) my parents are busy at work. 16. “I'd like a hamburger, please." "O.K. Is it for here ( The weather forecast says it will rain, ( ) to go?" 17. ) I'll take an umbrella with me 18. "What do you want to do today? Play a game?" "I ( ) ( ) watch a movie ( ) play a game today." 4. 5. 6. would

Check it out の問題を解いてくださる方いませんか？参考にしたいです！！

Model 1 Sara is giving a presentation about someone in her family. 1 up ar Today, I'd like to talk about my grandmother. She is 74 years old. She is a designer and still works at home. I really look up to her. My grandmother made me this ring. She gave it to me as a birthday present, so it's very precious to me. When I was a child, she often told me fairy tales. She always makes me happy. Check It Out Sound Tips QO What did Sara's grandmother do on Sara's birthday? Q2 When Sara was a child, what did her grandmother often do? She gave it to me as a birthday present. 日本語では「バ・一・ス・デ・- 」 のように5つの音 の区切りで言いますが, 英語の音節はbirthday のように2つです。 日本語式に5つに区切ると通じ にくい発音になります。 Q3 How does she make Sara feel?

至急です💦この原核生物の名前を教えていただきたいです！！

OODABOD P05889 原核生物 00000 原核生物 原核生物は, 細胞内に 核をもたない 共通の祖先

下にある指示語を教えてください。

「を用いない) くわす 岡捨てられ 図子犬 m 回 1ove こた 3ni 3 cuisine? Part されも T0 hesiant an ds tfw localize(d) [loukalaiz(d)] true Japanese cuisine. However, it is difficult to say what “true" Japanese cuisine is. Below/ are the favorite dishes of Japanese elementary Schoof children. Most of them came flooding into Japan during or after the Meiji period. elementary [eloméntari] flood(ing) [flad(ip)] period [pioriod] They were then adapted to Japanese tastes. Ramen, for example, came Irom China, but Japan created its own soups with dried sardines or pork bones. Curry came from India, but pork [p5:rk] bone(s) [bóun(2)] thick [0ik] today's “curry rice” with a thick curry sauce is Japan's style [stáil] Own style. creative [krieitiv] From these examples, we can say that creative adaptation of foreign dishes is also a characteristic of Japanese cuisine. When Japanese dishes are localized Overseas, should we call them false Japanese cuisine or adaptation [adaeptéijan] characteristic [keraktarístik) globalized Japanese cuisine? globalize(d) Igloubalaiz(d) nla 0% 10% 20% 30% 40% 50% おすし 09 ラーメン カレーライス やきにく ハンバーグ さしみ ステーキ ポテトフライ 二好きな食べ物 スパゲティ ハンバーガー ▲「小学生の好きな食べ物」("小学生白書WEB版”·学研教育総合研究所 2011年調査より)·1236ノ 5. themは何を指しますか。 6. Theyは何を指しますか。 15. themは何を指しますか