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Mathematics Senior High

問6のl=1のところが理解できません なぜ0にはならないのですか?

62023年度 数学 第4問 (100点) 2つのレポートの異なる度合い (非類似度)を数値化することは, レポートの独創性を の単語の集合をU={W,W2,...,W9} とする。 レポートAに, Uに属する単語が含まれる 評価するために重要である。 レポートのテーマに関する異なる9個の単語を選び,それら と表す。 同様に、レポートB についても調べたところ, 単語の集合 B が A∩B={ws}, かどうかを調べたところ, W2, W3, W's が含まれていた。 このとき, 単語の集合Aを A={w2,W3,Ws} AUB = {W1, W4,Wg} を満たしたとする。 次の問いに答えよ。 ANB 問1 集合 B を求めよ。 問2 集合Aの部分集合をすべて求めよ。 問3 集合ひの部分集合の個数を求めよ。 140*3 & ROTER) ( 問4 集合ひの部分集合X,Y について,集合 z=(XP)(1) の要素の個数n(Z) , n(X), n(Y), n() を用いて表せ。 ここで,Uの部分集合 X,Y に対して、XとYの非類似度d(X,Y) を次の式で定義する。 ((x)(x))) > n(A)th(B) - 2n (AMB) d(X,Y)= n(XUY) →n(A)+(B)-n(AB) 問5 集合 A, B に対して, AとBの非類似度d(A,B) を計算せよ。 NAKON ENCH 18-0 (0) E E-f(xgol)x= (22 E25023 問6 C,DをUの部分集合とする。 n(C)=4, n(D)=6のとき,CとDの非類似度 d(C,D) がとりうる値の最大値と最小値を求めよ。

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Mathematics Senior High

このページの問題なんですけど、三角関数の合成の解き方じゃ解けないんですかね、 解いたら2枚目以降の写真みたいになって、全部答えと合わないんです😭

301 tanα = t のとき cos'a, sin 2a, cos2a をtで表せ。 3020≦x<2πのとき, 次の方程式を解け。 (1) cos2x=cOS X *(2) sin 2x=cos x 13 (4) sinx(1+cos2x)+sin 2x (1+cosx)=0 3030≦x<2πのとき, 次の不等式を解け。 (1) cos 2x<sinx |指針 [解答 *304- - 例題280≦x<2πとする。 関数 y=cos2x-2 cosx の最大値、最小値と, そ のときのxの値を求めよ。 cos2x=2cos'x-1 を用いて, COSxだけの式で表す。 y = cos2x-2cosx=(2cos'x-1)-2cosx COSx=t とおくと, 0≦x<2πから また y=212-2t-1=2t したがって, t=-1 で最大値 3, π 2 きのxの値を求めよ。 t=1/23 で最小値-12/2 をとる。 0≦x<2πであるから, t=-1 のとき x=π -≤x≤- (2) cos 2x ≥cos²x *(3) cosx+sin2x>0 3 1 = 2(t-1212) ² - 2²/12 −1≤t≤1 ヒント 306 cos(R * (3) 2cos2x+4cosx-1=0 π 5 11/1/2のとき x=17/11/23 t=- 3' 第2節 加法定理 π 5 3 で最大値3.x=1 1/23 で最小値-12 3, 305 次の関数のグラフをかけ。 また、その周期をいえ。 (1) y=cos²x -1 10 TH 13-2 71 3 (2) y=3sin²x+cos²x 10 1 21 π とする。 関数 y=2sinx-cos2x の最大値、最小値と,そのと 306 △ABCにおいて, tan BtanC = 1 であるとき, この三角形は∠Aが直角で ある直角三角形であることを証明せよ。 第4章 三角関数

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English Senior High

九州大学英語2019年の英作文の添削をお願いします🙇‍♀️ 大問4が要約と英作文、5が和文英訳です!🙇‍♀️🙇‍♀️🙇‍♀️

〔4〕 九州大-理系前期 Read the following newspaper article and follow the instructions below. (36) 16 2019年度 英語 in Engligi taul" According to the Kanagawa Prefectural Police Station, a 20-year-old female university student caused a traffic death. The student was riding on a power- She moved off from an assisted bicycle when the accident happened. intersection and started riding on the sidewalk. At that moment, a 77-year-old lady was walking on the sidewalk and moved toward the bicyclist. The student hit the lady. The collision caused the lady to fall and strike her head. She was transported to hospital, but died of her injuries two days later. At the time of the incident, the student was apparently holding a smartphone in her left hand and a drink in her right while steering the power- assisted bike. Moreover, she had an earphone in her left ear. Therefore, police arrested the student for breaking the new law and riding recklessly. Police are investigating whether the student noticed that the old lady was walking toward her. They suspect that she was not paying sufficient attention because she was operating her smartphone right up until the collision. Her court appearance date has not been decided yet. The Mainichi, December 16, 2017 Instructions: Write two well-developed paragraphs in English. In the first paragraph, summarize the main points of the newspaper article above in lo approximately 100 words. Use different vocabulary and sentence structure from the original passage as much as possible. In the second paragraph, write your opinion about what should be done to reduce accidents like this in approximately 50 words. hosidinlong unich lor, condadnoah

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English Senior High

なぜdに入るのが③なんですか?④ではないのですか?

Who was the first scientist? It wasn't Isaac Newton. Today, it is generally acknowledged that Newton never thought of himself as a scientist. He couldn't, for the word didn't exist in was not only a scientist, but the greatest scientist who ever lived, yet (Newton his time. Newton thought of himself as a "philosopher," a word that (a)dates back to the ancient Greek thinkers and that comes from Greek words (b)meaning "lover of wisdom." There are different kinds of wisdom we might love, of course. Some philosophers are concerned chiefly with the wisdom derived from the study of the world about us and the manner of its workings. The world { c ℗ about 2 be 3 can 4 referred 5 to 6 us as "nature," from the Latin word meaning “birth." Nature, in other words, is everything that has been created or that has come into being. Philosophers who deal primarily with nature are, therefore, "natural philosophers." Newton thought of himself as a natural philosopher, and the sort of thing he studied was natural philosophy. Thus, when he wrote the book (d) he carefully described his three laws of motion and his theory of universal gravitation—the greatest scientific book ever written-he called it (in Latin) Philosophiae Naturalis Principia Mathematica, which in English is The Mathematical Principles of Natural Philosophy. The Greek word for "natural" is physikos, which in English becomes physical. Natural philosophy might also be spoken of as "physical philosophy, which can be shortened to “physics.” on. Physics As natural philosophy grew and expanded, all kinds of special studies developed. People began to speak of chemistry, of geology, of physiology, and so was whatever was left over, so it didn't suit as a general overall word for natural philosophy. Yet you needed some such short word, for natural philosophy was a seven-syllable mouthful.

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English Senior High

解答が無くて困ってます 答え教えてもらえると助かります

ⅡI. 次の英文の空欄 ( 11 ) から ( 30 )に入る最も適切な語句を, a.〜d.の中から 1つ選びなさい。 解答は解答用紙1枚目 (マークシート方式)の所定の解答欄にマークし なさい。 Huy Fong Foods, the southern California company that produces 20 million bottles of sriracha (1) annually, has experienced a low ( 11 ) of red jalapeño chili peppers in recent years made worse by spring's crop failure. What is the cause? ( 12 ) weather and drought (2) conditions in Mexico. It's not (13) chili peppers. Mustard producers in France and Canada said extreme weather caused a 50% reduction in seed production last year, ( 14 ) to a shortage of the condiment on grocery store shelves. Blistering heat, stronger storms, droughts, floods, fires and changes in rainfall (15) are also affecting the cost and availability of staples, including wheat, corn, coffee, apples, chocolate and wine. The climate crisis is increasing the intensity and ( 16 ) of extreme weather events — and it's putting food production at risk. "Almost everything we grow and ( 17 ) in the US is facing some climatic stress," said Carolyn Dimitri, nutrition and food studies professor at NYU. Wheat and other grain crops are particularly ( 18 ). In the Great Plains region, (19) most of the US's wheat is harvested, drought depressed the winter crop. Farmers are abandoning farmland used for growing winter wheat in the US-primarily in Texas and Oklahoma - at the highest rate since 2002. Meanwhile in Montana, flooding is (20) grain crops. The impact of the climate crisis on grain crops ( 21 ) beyond the US. In India, a fierce heatwave damaged the wheat crop ( 22 ) record-setting temperatures throughout the spring and summer. As Delhi hit 49°℃ in May, the government placed a ( 23 ) on wheat exports, driving up prices even further than the rise following Russia's invasion of Ukraine. Food production is a driver of the climate crisis and a (24) of it. ( 25 ) the food system will require a wide variety of actions, including increasing crop diversity, delivering climate (26) to farmers around the world, expanding conservation programs and offering growers insurance that pays out when an index such as rain or wind speed falls above or below a fixed limit. The Biden administration is supporting research into "climate-smart" agriculture, an approach to managing cropland, forest, fisheries and cattle that attempts to address the intersecting challenges of the climate crisis and food ( 27 ). In May, the UN secretary general, António Guterres, said that climate-related disasters and extreme weather were a driver of global hunger and that 1.7 billion people ( 28 ) by the climate crisis over the last decade. Experts say (29) action is taken, we can expect to see increased food prices, decreased availability and conflict over water, which will primarily affect poorer countries and low-income Americans, (30) everything from school lunches to food aid programs. © Copyright Guardian News & Media Ltd 2023 (1) sriracha (2) drought かんばつ 世界中で人気のチリソース

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