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数学 高校生

(1)場合分けのひとつをa<2と置いたのですが なぜ0<a/2<2で解くんですか? また(1)みたいに中央の値を求めて範囲を決める場合と(2)のように決めない場合の違いを教えて欲しいです。 私は(2)のように(1)解こうとしました。

02 D 基本例題 61 定義域の一端が動く場合の関数の最大・最小 00000 aは正の定数とする。 0≦x≦a における関数 f(x)=x2-4x+5 について (1) 最大値を求めよ。 (2) 最小値を求め CHART O SOL OLUTION [1] 軸が定義域の 中央より右 ト軸 定義域の一端が動く場合の2次関数の最大 最小 軸と定義域の位置関係で場合分け ・・・・・・ 軸 定義域が 0≦x≦a で あるから, 文字αの値 が増加すると定義域の 右端が動いて,xの変 域が広がっていく。 し たがって, a の値によ って, 最大値と最小値をとるxの値が変わるので場合分けが必要となる。 (1) y=f(x)のグラフは下に凸の放物線であるから,軸からの距離が遠いほど yの値は大きい (カ. 100 INFORMATION 参照)。 したがって, 定義域 0≦x≦a の両端から軸までの距離が等しくなる (軸が定義域の中央に一致する ) ようなαの値が場合分けの境目となる。 I=8+D- 最大 定義域 の中央 x=0x=a [2] 軸が定義域の 中央に一致 軸 最大 宝 1p.97 基本事項 2, 基本 58 MC 区間の 右端が 動く 1 x = 0 |軸 端から軸ま での距離が 等しいとき JERO 定義域 の中央 x=a 軸が定義域の> 定義域の両[3] で 区間の 右端が 動く HER 0< x=0 基本62,63 中央より左 軸| |軸 ● 最大 x=a 13 13 MOT 定義域 の中央

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英語 高校生

教えていただきたいです。🙇‍♀️🙇‍♀️ よろしくお願いします。

EXERCISE D >> ( )内の語句を並べかえて英文を完成させなさい。 |01 定員がすでにいっぱいで, 希望していた講座を履修できず残念だ。 It's a pity that I (to/I/ take / can't/ wanted / course / the) because it's already full. 〈金沢工業大 > can't take 102 事情は50年前とは大違いである。 [1語不要] (are/as/ 03 04 the course I wanted to different/from/they/things/very/were/what) fifty years ago. 〈 東京理科大 > どんなに健康に自信があっても、年に1度は健康診断を受けることがすすめられている。 (how/no/are/you/about/confident/matter) your health, you are advised to have a medical check-up once a year. No matter how Confident about You are ささやかながら, あなたの家族のお役に立てることは何でもしたい。 I'd like to do (little/I/ what/service/ do/can) for your family. 〈日本大〉 〈埼玉医科大〉 05 I still (the cold / recovered from / I/haven't / caught ) last week. <センター試験> 06 In Japan, people often perform activities in groups, and (Japanese people travel / more clearly than / nothing/shows this / the way in which). plied, but 〈センター試験〉 □07 New information about diet (us/many people/shows/what/that)think is incorrect. 〈センター試験〉 英文法完全演習 パワー・フレイム 850 16 ****** 77 関係詞

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TOEIC・英語 大学生・専門学校生・社会人

informations···▸informationに変えるような問題です。 答え合わせがしたいので、答えを教えて頂きたいです。大問1と2です。

1 Correct the sentences which have mistakes. Tick (✔) the correct sentences. 1 Do you have any informations about these people? information 2 How many people do you employ? Sorry, I don't have much time. Let's be quick. 4 A little customers have complained about the increase. 5 I'm afraid we don't have many paper in stock. 6 There isn't much demand for this line any more. Give him any more time to finish this. I've got fewer space in my new office than in my old one. 9 A lot of people said they preferred the taste of this one. 10 I'd like a little help with that, please. 7 8 2 Two people are checking the store cupboard at work. Complete their conversation with a suitable quantifier. A So, how many boxes of paper clips do we have in stock? so we should B Well, we only have a ² probably order some more. A How about ink cartridges? I don't think there are left. 3 B Well, there's an extra box of them here, but we'll more, sooner or later. need 4 A OK. What about the coffee machine? How 5 coffee is there? B There's a 6 7 of that, but there aren't packets of tea. A Right, so that's paper clips, ink cartridges and tea. Anything else? a at the moment, but people in the office have asked me if B Well, we don't have 8 9 we can have biscuits for the tea breaks.

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TOEIC・英語 大学生・専門学校生・社会人

答え合わせの為、答えを教えて頂きたいです。 よろしくお願いします。ビジネス英語です。

Working with words 1 Complete the sentences with the words in bold. Change the form of the word in bold or add another word to it. supply 1 It's important to build good relationships with different suppliers. 2 Our supply chain begins with the manufacturer in India and ends in our UK shops. is much higher but it's transport 3 The cost of air faster. show 4 Customers from all over Europe visit our in Paris and Milan. invent 5 Every item in our photographic records of each of them. middle 6 The problem with using is that it adds to the final cost of products because we have to add on their fee. is unique, so we keep ship 7 We have a large. track 8 We use barcodes to stock coming in and out of the warehouse. made 9 All our pots are _, which makes them expensive, but our target customer doesn't want anything mass-produced. original 10 The arriving in three days. of the of the products is printed on the bottom of the box. 2 Underline the correct words in italics to complete the sentences. 1 The book is currently out of stock, but it is on / out of order, so we'll have it soon. 2 We need to stock up on / run out of headed paper. Could you put an order in? 3 I ran low on/out of ink, so I couldn't print out the report. 4 We can keep track of/ on track our order by satellite. 5 Let's stop at the next service station. We are running low/out on petrol. Business 1 Complete the phone call between Virginie, a customer, and Kevin, a call handler. Put the words in italics in the correct order. Kevin Good afternoon, you're speaking to Kevin. How can I help you? Virginie Hello, I am up/chasing/an/order chasing up an order I placed three weeks ago. Kevin account /take/I/your/details / Can please? 2 Virginie Yes. The account number is 572638. Kevin OK. If you bear with me a moment, I'll into / look/it 3 Let me see. Well, my /to / information / according it is still on order. 4 Virginie I really need to know happened /to/has/it/ what 5 Could check/me/you/it/for/out 6 ? Kevin Certainly. I'll back/you/to/hour / within/get/ the 7 Virginie Thank you. 2 Kevin calls Virginie back. Complete their conversation with the phrases from the list. put the order straight through asap charge it to was dispatched on check it out as quick as we can must have gone wrong Kevin Hello, this is Kevin from DYK calling. I've got some information about your order. Virginie Oh, thanks for calling back. So, what's happened to it? Kevin Well, we put the order straight through to the warehouse, and it 2_ the 25th. Virginie But I haven't received it yet. Kevin I'm sorry about that. Can you confirm the delivery address? Virginie We wanted it delivered to our Brussels office. Kevin Oh, something 3 It looks like it might have gone to your Paris office instead. I'll 4 straightaway. Virginie I've already been waiting three weeks. Could you just send it again 5 ? Kevin OK, no problem. We'll resend it Virginie Thank you. And please not the Paris one. the Brussels account,

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