Grade

Type of questions

Mathematics Senior High

複素数平面です 線を引いたところがよく分かりません lβ/αl=√2のときπ/4と等しいのは何故ですか?🥲

数学Ⅱ・数学B 数学 C (2) 0でない2つの複素数α, B が ko-2aβ+B2=0 実数の定数とする。 を満たすとき,複素数平面において原点O, αを表す点 A, β を表す点Bの 位置関係を考える。 b=t とする。 αが0ではないことから,与えられた等 式の両辺を2で割って得られるtの2次方程式を用いて B α の値を求めるこ とができ,そこから3点 0, A,Bの位置関係を考えることができる。特に 3点0,A,B が三角形の3頂点となること, すなわち 3点 0, A, B が同 一直線上にはないことの必要十分条件は キ である。ここでk=2のと き, 30, A, B は ク であり,k=3のとき, 3点 0, A, B は ケ である。 また、3点 0, A, B が三角形の3頂点であり OB -=4と OA なるのはk= コサのときである。 キ の解答群 O k≥1 ①k>1 (2) k≥0 k>0 k≧-1 (5) k> -1 の解答群 ⑩正三角形の3つの頂点 ① 直角二等辺三角形の3つの頂点 ②二等辺三角形でない直角三角形の3つの頂点 ③ 正三角形でも直角二等辺三角形でもない二等辺三角形の3つの頂点 ④ 二等辺三角形でも直角三角形でもない三角形の3つの頂点 (数学Ⅱ・数学B 数学C第7問は次ページに続く。

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English Junior High

写真の問題より、(3 )に入る言葉の模範解答がbigger,largerだったのですが私はmoreとかきました。moreだとバツにたりますかね?

Tony: What are you going to make a presentation about? Riku I'm going to introduce my idea for a new park. Here is a graph showing "Roles which people want for parks." I think parks serve many important roles. I want to make a wonderful new park in my town in the future. Tony: Great! Riku What is the most important role for parks for you? Tony: Well, I think "A place for eating" is the most important. Riku: I think that is important too. But its percentage is the lowest in this graph. Roles which people want for parks A hub for the community A place for exercise and sports A place for children to play A place for relaxing A place for eating 0% 10% 20% 30% 40% Tony Interesting. In my country, I often enjoy eating lunch in a park. Riku: I think "A place for children to play" is the most important. Many other people also want that role. Tony Yes. Its percentage is a little lower than that of "A place for exercise and sports" and "A hub for the community." But it's higher than the percentage for the other roles. Riku Parks can play a lot of roles in a town. I'll try to make a park that serves important roles. There are many possible roles for a park in a town. I hope people find good roles for my park. Tony: Great! I think your presentation will be really interesting. I want to know more about parks and towns. hub +0 <要約文> Riku is going to introduce his idea. He and Tony look at a graph that shows some (1) which people want for parks. As for the (2) important role for parks, Riku thinks it is "A place for children to play," but Tony thinks it is "A place for eating." According to the graph, the percentage of Riku's opinion is (③) than Tony's. Riku hopes to make a park that plays important roles.

Resolved Answers: 1