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数学 高校生

何で重解から考えるんですか?

282 第4章 関数の極限 Check 例題124 無理関数のグラフと直線 ・・① のグラフと直線y=x+k•••••• ② との共 関数 y=√2x-1 有点の個数を調べよ.ただし,k は実数の定数とする. 考え方 まず無理関数 y=√2x-1 のグラフをかく. 次に,kの変化に応じて,直線を動かして考える. 直線を上から下に平行移動するとき, 次の2つに注意 すれば、共有点の個数の変化がつかみやすくなる。 ① 曲線 ①と直線②が接するときのんの値 図] 直線②が曲線 ①の端点 (121, 0) を通るときのん CARAC の値 つまり,①を境として共有点の個数が 850 0個→1個→2個 を境として共有点の個数が 2個→1個 解答 ①のグラフは右の図のように なる. na まず①,②のグラフが接する ときのんの値を求める. ① ② より 両辺を2乗すると, Focus √2x-1=x+k k</1/2,k=0のとき. 2' <0 のとき, 共有点の個数はグ を対称軸とす とそれぞれ変化する. 2 YA 34+05-\ flampa 1- 845 VAS Ø 1 1 MX 2 2個 (2) (1) 48 2x-1=(x+k)2 より, x2+2(k-1)x+k²+1 = 0 LEDS この方程式の判別式をDとすると, 重解をもつから, D =k-1)-(k²+1)=-2k=0 より, k=0 次に、直線②が点 ( 12.0)を通るときのたの値を求める。②にx=yal を (☆) 0= 1/2+kk), k=- 代入する. 2 以上より, ①,②のグラフの共有点の個数は, >0のとき、 0個 1個 eta + (a y=√2x-1 y=x+k 2 y=√/2x-1 ①のグラフと数本の 当な②のグラフをかく y = √(√2(x - 1) ①のグラフは y=√2x のグラフを x 軸方向に1/だけ 行移動したもの 接する重解をもつ ⇔D=0 グラフで確認する。 ん の値の減少により、 ②は下方に平行な動 る.

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英語 高校生

教えてください💦

1 Choose the best answer to fill in the blanks. (1) (1) Three years ( 3 ) since I came here. 1 pass 2 were passed (2) ( Many ) all of the houses have been sold. 2 Mostly (3) I have nothing to do ( 1 to 2 for (4) The new amusement park is ( 1 fifth time as large 3 five times as large (5) She was born ( Dat... by ... on (6) If I ( 1 win (7) There isn't ( 1 a few (8) She tries to do ( 1 what ) Kyoto ( 2 in... on in (11) The window ( 1 leave 3 have passed ) the affair. (10) The new station building ( will have been 2 has (12) I wanted to see ( D1if 3 Almost 3 about ) as the old one. 2 while ) a million dollars in the lottery, I would travel around the world. (2) won 3 winning 4 will win 2 fifth time larger five times larger ) July 7, 1977 ( 3 in ... on ... at ) her mother did in the past. 2 how 3 when ) information on this topic in the library. (3) an 2 many (13) ( -) that this is a serious matter. You are important realizing 3 You are important to realize ) open by the child. 2 leaves 4 passed (9) An event ( ) French culture was held at our university last week. having been introduced 2 introduced 4 which introduce 3 introducing The most 4 with 3 left ) all the members had arrived. 3 who 4 which ) 7:17 in the evening. 4 on at ... at 4 much 4 which ) completed by the time you return from your year abr 3 has been 4 to be (亜紀 (4) was left 5 what (東京 2 It is important for you realizing It is important for you to realig (京都 (大阪 (京都 ( (九州産

未解決 回答数: 1
英語 高校生

答えがあっているかと空いてる部分の答えを教えて頂きたいです🙇‍♂️🙇‍♂️お願いします!!

3 Choose the best answer to fill in the bla (1) A: When do I need to register by? of とうろく B: ( ) A: OK. So any time is fine. It's too late now. It's up to you. 28 bajquip diw qu Jug give me a ride. Do you have the time? 3 Where can I ask for help? 2 You need to. 4 It's by the desk. ICON 9197 (2) Linda: ( ) „boquis sit ni hasri blo ait tein rudrabreny vin some w (2) Haround S you Adam: Sure. How can I help you? Linda: I need to go to the supermarket tomorrow. I'll appreciate it very much if Steatroo doosqe tart ni haq lut of prior no TOT enamblists aris to ogrinevhs sloot you 93191 2 Who can help me out? 4 Would do me a favor? you minor s It tastes great. maidony du mean best Danok's bevies (3) Mary: Everyone will be here soon. Judy Hey, that salad looks really good. Do you mind if I try some? Mary: ( vilevaso visinobibos (S spomini D Judy Thanks a lot. Mmm No, not at all. Go ahead. 3 Yes, I do mind. (2) 洋子へのプレゼントを買うのを手伝ってください。 Please help (me/a/buy/present / Yoko / for). (STRO 2 I have no reason. 4 Are you sure it's okay? 4 Put the words in the correct order. (1) (1) アドバイスを求められて, 私は何と言っていいか途方に暮れた. Asked for advice, I (to/a/say/was/at/loss / what). me buy a present for Yoko (3) あなたはにんにくが何によいか知っていますか. (you/ for / good/do/garlic/is/know/what)? Do you know what garlic is good for you (4) 私はおもしろければどんな本でも読みます . I (interesting / any book/ as long / will read/as it /is). will read any book as long as it 9au ahig ow) C 901fon is interesting il ton en vleesimis 35423366 (5) 政夫は少しの間友人のイヌの世話をするように頼まれました. for a Masao (his friend's dog/look/to/a/ asked/for/after/was) while. was asked to take care of his friend's dog ET TU (北海 (大阪

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