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数学 高校生

二枚目の平行四辺形の方の問題では、問題文の平行四辺形を表す、アルファベットの順序によって、一意に定まると書いてありますが、一枚目の方もアルファベットの順序がOABと書いてあるのに、角a、b、oのどれが直角かの場合分けごとに、二つの図形が出てきて一意に定まっていません これは... 続きを読む

基本 例題74 平行四辺形の頂点の座標 ( A(7, 3), B(-1, 5), C(5, 1), Dを頂点とする平行四辺形 ABCD の頂点 D の座標を求めよ。 (2) 3点A(1, 2), B(5, 4), C(3, 6) を頂点とする平行四辺形の残りの頂点 D の座標を求めよ。 D.113 基本事項 4 指針> 平行四辺形の対角線は, 互いに他を2等分するから, 2本の対角線の中点が一致する。 このことを利用して, 点Dの座標を求める。 (1) 普通, 平行四辺形 ABCD というように, 頂点の順序が与えられているときは, D の位 置は1通りに決まる。 (2) (1) と異なり,頂点の順序が示されていないから, 平行四辺形 ABCDと決めつけては いけない。 ABCD, ABDC, ADBCの3つの場合を考える。 解答 頂点Dの座標を(x, y) とする。 (1) 対角線 AC, BDの中点をそれぞれ M, Nとすると 7+5 3+1 5+y B- (NOW )) N-1+x 2 点Mは点Nと一致するから 2 12 -1+x 5+y 22 x=13, y=ー1 D(13, -1) 2 22 2 よって ゆえに (2) 平行四辺形の頂点の順序は, 次の3つの場合がある。 [2] ABDC [3] ADBC [1] ABCD 」の場合,対角線は AC, BDであり, それぞれの中点を 1+3 5+x 4+y M(, 240) ( ) B M, N とすると 8 x+9 4+y M, N の座標が一致するから 2 22 22 22 埼討

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数学 高校生

私はいまニュージーランドに留学している今年度上智大学を受験予定の高校2年生です。上智大学の経営学科の帰国生入試には和訳問題があるのですが、どれも自分には難しく、現地の先生にアドバイスしていただいてもいまいちわかりません。どなたか、回答を教えていただければと思います。 下線... 続きを読む

Why - and why now? Because of the shift in the Experience Economy. Goods and services are no longer enough; what consumer want today are experience - memorable events that engage them in an inherently personal way. As paid-for experiences proliferate, people now decide where and when to spend their money and time - the currency of experiences - as much if not more than they deliberate on what and how to buy (the purview of goods and services). (1) But in a world increasingly filled with deliberately and sensationally staged experiences - an increasingly unreal world - consumers choose to buy or not buy based on how real they perceive an offering to be. Business today, therefore, is all about being real. Original. Genuine. Sincere. Authentic. In any industry where experiences come to the fore, issues of authenticity follow closely behind. Think of Disneyland. No place before or since its opening in 1955 has provoked more debate on authenticity within modern culture, nor has any other business sparked more controversy on the effect of commercial activity on the reality of modern living than the Walt Disney Company. (2) Or think coffee. Starbucks earns several dollars for every cup of coffee, over and above the few cents the beans are worth, precisely because it has learned to stage a distinctive coffee-drinking experience centered on the ambience of each place and the theatre of making each cup. Perhaps no other company in the world more earnestly and steadfastly seeks to render authenticity ー resolutely shaping how real consumers perceive it to be. The task has become harder and harder, however, as Starbucks has grown from one shop in Seattle to over 13,000 venues around the world, for nothing kills authenticity like ubiquity. The success of Starbucks no longer depends on its operational prowess or taste superiority; it lies solely in sustaining coffee drinkers' perception of the Starbucks experience as authentic. (3) Now that the Experience Economy has reached full flower - supplanting the Service Economy as it had in turn overtaken the Industrial Economy, which itself had replace the Agrarian Economy - such issues of authenticity now bear down on not only all experience offerings but across all of the economyY.

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