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数学 高校生

X-2ってどういうことですか?? よくわからないです。 教えて欲しいです🙇‍♀️🙇‍♀️🙇‍♀️🙇‍♀️

22 OOOO0 重要例題55 関数の作成 図のような1辺の長さが2の正三角形 ABC がある。点P が頂点Aを出発し、, 毎秒1の速さで左回りに辺上を1周す とき、線分 APを1辺とする正方形の面積」、を,出発後 の時間x(秒)の関数として表し,そのグラフをかけ。 ただし,点Pが点Aにあるときは 3y=0 とする。 a, bo 合 で 、ol B CHART OS。 変域によって式が異なる関数の作成 ① xの変域はどうなるか 2 面積の表し方が変わるときのxの値は何か 一 x=2, 4 点Pが辺 BC上にあるときの AP2 の値は, 三平方の定理から求める。 OLUTION 二分け 一解く 0SxS6 する 解答 y=AP* であり, 条件から, xの変域は [1] ×3D0, x=6 のとき [2] 0<x<2 のとき 0SxS6 点Pが点Aにあるから 点Pは辺 AB上にあって ソ=0 AP=x P P よって y=x 4 点Pは辺 BC上にある。 辺BCの中点をMとすると, BCIAM であり PM=1-(x-2)=3-x PM=(x-2)-1=x-3 [3] 2<x<4 のとき B C月 P M BM=1 x-2 よって, 2<x<3 のとき 結局 2<x<4 のとき PM=|x-3| 3<x<4 のとき ここで AM=/3 ゆえに, AP?=PM?+AM° から [4] 4<x<6 のとき AP=(AC-PC)? から y=(x-3)?+3 点Pは辺CA 上にあり, PC=x-4, 頂点(3, 3), 軸 x=3 の放物線 {2-(x-4)}?=(6-x) =(x-6)? 頂点(6, 0),軸 x=6 の放物線 x=0, y=0 は y=x° に, x=6, y=0 は y=(x-6)? に含められる。 II 1 y=(x-6) ]~(4] から 1 1 0SxS2 のときy=x* 2<x<4 のとき y=(x-3)*+3 4<x<6 のとき y=(x-6) グラフは右の図の実線部分 である。 3 I 0 234 6 x 本

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英語 高校生

英語に自信がある人回答づくりお願いします! ※書き込みは気にしないでください。

第2間 次の金会話文を読んで、 股設間に答えなさい。 Miranda: Are you enjoying yourself here in the States, Yuya, now that you've been here for a fow months? Yuya: Yes, I'm having a great time, Ite ( 1 ) how much of it is being in a foreiy Country and how much of it is just being in college, though, Miranda: Iguess I know ( 2 ), There's a lot more freedom iving away from home . don't have my mom and dad badgering me all the time about where P'm telling me to do my homework, either, Yuya: Exactly, olway/my/the /were / parents / same ], Miranda: I suppose that kind of thing has no borders, Do you find yourself ( 3 ).. all? Yuya: Not really, IfI were living alone, I might, But I have roommates and . been ealling or texting my parents once a week, ( 4 )I gues I don't feel tho isolated, Imiss Japanese food a bit but it'snot too bad, How about you'2 Miranda: Not one bit, I'm gl to/ to be / happy / my own/live / able ] life, Even thouoh I guess Iam still adjusting a little, It's tough having to fend for myself for fud I sometimes get so wrapped up in things that I( 5 ), and then I pay for it later Maybe I should have gotten the meal plan after all, Yuya: It's so expensive, though, And you'd still have to go to the dining hall, s01 don't ol solve / your/think/it/problem/would ], Maybe I'll just have to invite you out for lunch like this more often, Miranda: Who am I to say no to that? Yuya: OK, ola/away/ has/ that/and/ half] the best ice eream, 6 ) Do you want to get some dessert? I know a place about a block Miranda: You don't have to twist my arm, lo o A dnids nog o fal 00 fom yod ef'T IAl odhon dd o 3.

回答募集中 回答数: 0
英語 高校生

英語に自信がある人回答づくりお願いします! ※書き込みは気にしないでください

第2間 次の金会話文を読んで、 股設間に答えなさい。 Miranda: Are you enjoying yourself here in the States, Yuya, now that you've been here for a fow months? Yuya: Yes, I'm having a great time, Ite ( 1 ) how much of it is being in a foreiy Country and how much of it is just being in college, though, Miranda: Iguess I know ( 2 ), There's a lot more freedom iving away from home . don't have my mom and dad badgering me all the time about where P'm telling me to do my homework, either, Yuya: Exactly, olway/my/the /were / parents / same ], Miranda: I suppose that kind of thing has no borders, Do you find yourself ( 3 ).. all? Yuya: Not really, IfI were living alone, I might, But I have roommates and . been ealling or texting my parents once a week, ( 4 )I gues I don't feel tho isolated, Imiss Japanese food a bit but it'snot too bad, How about you'2 Miranda: Not one bit, I'm gl to/ to be / happy / my own/live / able ] life, Even thouoh I guess Iam still adjusting a little, It's tough having to fend for myself for fud I sometimes get so wrapped up in things that I( 5 ), and then I pay for it later Maybe I should have gotten the meal plan after all, Yuya: It's so expensive, though, And you'd still have to go to the dining hall, s01 don't ol solve / your/think/it/problem/would ], Maybe I'll just have to invite you out for lunch like this more often, Miranda: Who am I to say no to that? Yuya: OK, ola/away/ has/ that/and/ half] the best ice eream, 6 ) Do you want to get some dessert? I know a place about a block Miranda: You don't have to twist my arm, lo o A dnids nog o fal 00 fom yod ef'T IAl odhon dd o 3.

回答募集中 回答数: 0
英語 高校生

英語に自信がある人回答づくりお願いします! ※書き込みは気にしないでください。

第2間 次の金会話文を読んで、 股設間に答えなさい。 Miranda: Are you enjoying yourself here in the States, Yuya, now that you've been here for a fow months? Yuya: Yes, I'm having a great time, Ite ( 1 ) how much of it is being in a foreiy Country and how much of it is just being in college, though, Miranda: Iguess I know ( 2 ), There's a lot more freedom iving away from home . don't have my mom and dad badgering me all the time about where P'm telling me to do my homework, either, Yuya: Exactly, olway/my/the /were / parents / same ], Miranda: I suppose that kind of thing has no borders, Do you find yourself ( 3 ).. all? Yuya: Not really, IfI were living alone, I might, But I have roommates and . been ealling or texting my parents once a week, ( 4 )I gues I don't feel tho isolated, Imiss Japanese food a bit but it'snot too bad, How about you'2 Miranda: Not one bit, I'm gl to/ to be / happy / my own/live / able ] life, Even thouoh I guess Iam still adjusting a little, It's tough having to fend for myself for fud I sometimes get so wrapped up in things that I( 5 ), and then I pay for it later Maybe I should have gotten the meal plan after all, Yuya: It's so expensive, though, And you'd still have to go to the dining hall, s01 don't ol solve / your/think/it/problem/would ], Maybe I'll just have to invite you out for lunch like this more often, Miranda: Who am I to say no to that? Yuya: OK, ola/away/ has/ that/and/ half] the best ice eream, 6 ) Do you want to get some dessert? I know a place about a block Miranda: You don't have to twist my arm, lo o A dnids nog o fal 00 fom yod ef'T IAl odhon dd o 3.

回答募集中 回答数: 0