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英語 高校生

投げやりです。すいません。英語皆無なので代行してください。

【必答問題 5 日常使う物のデザインをする際には標準化 (standardization) という方法がある。 という内容に続く次の英文を読んで、あとの問いに答えよ。(配点44) If we examine the history of advances in all technological fields, we see that some improvements come naturally through the technology itself, while others come through standardization. The early history of the automobile is a good example. The first cars were very difficult to operate. They required strength and skill beyond the abilities of many. Some problems were solved through automation. Other aspects of cars and driving were standardized through the long process of international standards committees: . On which side of the road to drive (constant within countries) country, but variable across On which side f the car the driver sits (depends upon which side of the road the car is driven) -The (2) of essential components: steering wheel, brake, clutch, and accelerator (the same, whether on the left- or right-hand side of the car) Standardization is one type of cultural constraint. With standardization, once you have learned to drive one car, you feel confident that you can drive any car, anyplace in the world. Standardization provides a major breakthrough in usability. I have enough friends on national and international standards committees to realize that the process f determining an internationally accepted standard is laborious. Even when all members agree on the merits of standardization, the task of selecting standards becomes a long, political issue. A small company can standardize its products without too much difficulty, but it is much more difficult for an industrial, national, or international body to agree to standards. There even exists a standardized procedure for establishing national and international standards. organizations works on standards. First, a set of national and international Then when a new standard is proposed, it must work its way through each organization's approval process. Standards are usually the result of a *compromise among the various competing positions, which can often be an inferior compromise. Sometimes the answer is to agree on (4 ). Look at the existence I both metric and *English units; of left-hand- and 18 right-hand-drive automobiles. There are several international standards for the *voltages and *frequencies of electricity, and several different kinds of electrical plugs and sockets- which cannot interchanged. With all these difficulties and with the continual advances in technology, are standards really necessary? Yes, they are. Take the everyday, clock. It's standardized. Consider how much trouble you would have telling time with a backward clock, where the hands revolved "counterclockwise." A few such clocks exist, primarily as humorous conversation pieces. When a clock truly violates standards, such as (the one in Figure 1, it is difficult to determine what time is being displayed. Why? The logic behind the time display is identical to that of conventional clocks: there are only two differences - the hands move in the opposite direction (counterclockwise) and the location of "12," usually at the top, has been moved. This clock is just as logical as the standard one. It. bothers us because we have standardized on a different scheme, on the very definition of the term clockwise. Without such standardization, clock reading would be more difficult: you'd always have to figure out the "mapping. E) compromise *metric メートル法の *English units イギリスの計量法(ヤードボンド法) *frequencies of electricity 電気の周波数 voltages E *mapping 対応づけ (2つのものの間の関係を意味する専門用語) 問1 下線部(1)の内容を、 同じ段落の自動車の例に基づいて30字以内の日本語で答えよ。た だし、句読点も字数に数える。 問2 本文中の空所 (2) に入る語として最も適当なものを、次のア~エのうちから一つ 選び 記号で答えよ。 7 color イ location ウ price I sight (239) 問3 第2パラグラフ (Standardization is one type of ...) について 次の Question に対す る Answer となるように、空所に入れるのに最も適当なものを,次のア~エのうちから一 つ選び、 記号で答えよ。 Question: What is "a major breakthrough in usability" provided by standardization? Answer Because of standardization, you ( device of the same kind all over the world. 7 can apply what you have learned to イ can make cannot produce I cannot use what you have learned when using 問7 下線部(5)が表す図 (Figure 1)として最も適当なものを、次のア~エのうちから一つ選 び記号で答えよ。 11 12 1 12 ) any machine or 10 2 10% 9 3 1 5 6 問4 下線部(3)の示す内容を, 40字程度の日本語で答えよ。 ただし, 句読点も字数に数える。 ウ 11 6 1 問5 次の文を第3パラグラフ (Ihave enough friends...) に入れるとき,本文中の①~ のうちのどの位置に入れるのが最も適当か、 次のア~エのうちから一つ選び, 記号 で答えよ。 9 3 Each step is complex, for if there are three ways of doing something, then there are sure to be strong proponents of each of the three ways, plus people who will argue that it is too early to standardize. 70 問8 最終パラグラフ (With all these difficulties...) の内容をもとに, 次の Question に2 語程度の英語一文で答えよ。 Question: According to the writer, why is the standardization of the everyday clo necessary? イ 2 ウ H O 問6 本文中の空所 (4) に入れるのに最も適当なものを、次のア~エのうちから一つ選び 記号で答えよ。 7 a single standard 1 several different standards ウ the same standard I too few standards <<-20-> <-21->

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数学 高校生

書き込んである①②のことが分かりません!誰か解説してくださると嬉しいです。宜しくお願いいたします🙇

B1-46 (64) 第1章 数 列 例題 B1.29 群数列(1) *** ・・・・となるよ 1から順に奇数を並べて,下のように1個 3個 5個 ...... 2 うに群に分け,順に第1群, 第2群, ・・・・・・とする. 13 5 7 9 11 13 15 17 | 19 (1) 第n群の最初の数と最後の数を求めよ. (2)第n群に含まれる数の総和を求めよ. (3)207は第何群の何番目の項か. [考え方] 各群にいくつずつ項が入っているか考える. このように、数列をある規則によっていくつかの群に分けているものを,群数列と 群 項数 数列 1 1 1 2 3 3,5,7 3 5 項数の和 1 1+3 1+3+5 n-1 n 9, 11, 13, 15, 17 2(n-1)-1, O-2, O 2n-1 O+2,..... 1+3+5+....+{2(n-1)-1} 1+3+5++{2(n-1)-1}+(2n-1) 初項 1.公差2の等差数列{az},すなわち,a,=2n-1 が群にわけられている。 群数列のポイント (1)第群の1つ前の群(第 (n-1) 群)までに頂数がいくつあるか考える。 (2)第n群だけを1つの数列として考え, 初項, 項数などを求める. (3) まずは 207 が第何群に属するか考える. 解答) (1) 第群には (2k-1) 個の数が入っているので,第1 群から第 (n-1) 群 (n≧2) までに入る数の個数は, ①なぜい群じゃなくて、 n1 なのか ②この+1はどこから きたのか、 1+3+5+....+{2(n-1) -1} =(n-1){1+(2n-3)} =(n-1)^ ...... ① したがって,第n 群の最初の数は, (n-1)+1=n-2n+2 (番目)の数である. 第n群の最初の数は -2n+2 番目の奇数であり, その数は, 2(n-2n+2)-1=2m²-4n+3 これは n=1のときも成り立つ. 次に,第n群の最後の数を考える。 第1群・・・1個 第2群・・・3個 第3群・・・5個 第n群... (2-1 2(n-1)-1=2 より初項1 2-3 項数 - 等差数列の和 もとの数列{2m- の代わりに i maps//WW FC 第1群から第n群までに入る個数を考えて①より, 2番目の奇数であるから,その数は, 2n2-1 よって、第n群の最初の数は2m²-4n+3, 最後の数は22-1 (2)第群は,(1)より 初項2m²-4n+3.末項 2²-1. 項数 2n-1 の等差数列だから,その和は、 wwwwwwwwwwwwwwww 1/12 (2n-1){(2m²-4n+3)+(2n-1)} (2n-1)(4n²-4n+2) =(2n-1)(2n²-2n+1) 22n+2とす ①と同様にして られるが、①の の代わりに とよい 初項 α,末項 nの等差数列の S=(a+

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