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English Senior High

教えてほしいです

3 次の英文を読み, 空所に入れるのに最も適切なものを, それぞれ下の①~④のうちから一つずつ選びなさい。 Cigarette smoking has negative effects not only on the body of the person who smokes but also on the body of someone who regularly breathes in second-hand smoke. Some of the most obvious effects are high blood pressure, sleep disorders, heart failure, and lung cancer. Despite such harmful consequences, ( 10 ). It has been reported that smoking creates feelings of pleasure, reduces tension, and promotes close relationships. Many smokers admit that smoking is a bad habit. ( 11 ), they tend to think that the number of cigarettes that they smoke is below the danger level and thus are not worried about the risk. Some even feel that they do not breathe in the smoke and that a cure for cancer will be found before they become ill with the disease. We have to admit that smoking is a habit which is difficult to break ( 12 ) the nicotine found in tobacco goes into the blood and stimulates the brain, making smokers feel pleasant for several minutes. What is more, the smoker usually feels anxious and wants to have another cigarette. ( 13 ) the policies that now ban smoking in most public areas, the stress that people often experience at work and at home can force them to smoke. ( 10 ) ①some people decide to stop smoking millions of people continue to smoke ( 11 ) the price of cigarettes has risen ①smoking is more harmful than drinking Therefore 2 While ③ Of course 4 However (12) 1 because 2 as a result 3 but SO (13) ①Despite 2 Although (3) But 4 Yet

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Mathematics Senior High

サの部分がわからないので解説して頂きたいです。

000076 76 sin0, cos0 の2次式の最大・最小 a, b, cは正の定数とする。 0 2 の範囲で定義された2つの関数 S(0)=(1-√3a)sin' 0 +2asincos0+ (1+√3a)cos'0g(0)=bsinc0+b について (1) S(0) を a, sin20, cos20 を用いて表すと S(0) T lasin 20+ + ウ イ と変形できる。 よって,f(8) は のとき最大値 A = [エオ (2) g (0) の最小値が0であるとき, cの値の範囲は cサである。 このとき,さらにS(0) g(8) の最大値と最小値がそれぞれ一致するならば a+ キ 0= T ■ク のとき最小値ケ コαをとる。 b = セ + ソ タ a = ス チ である。 解答 (1) f(0) 変形すると Key 1 f(0)=(1-√3a) 1-cos20 2 +2a- sin20 2 +(1+√3a)1+ cos20 Key 2 2 = asin20+√3acos20+1= a(sin20+√3 cos20) +1 =2asin(20+ /25) +1 f(8) = (sin'0+cos'0) +a2sincos0 +3 a(cos20-sin³0) と変形し 2倍角の公式 2sincos0 = sin20 cos' 0 -sin^0= cos20 を代入してもよい。 π のとき ≤20+ 3 13 4 S より √3 2 α > 0 より ≤ sin(20+) 1 -√3a+1≦2asin (20+4 +1 ≦ 2a+10 よって, f(8) は 1 02 π π 20+ すなわち 0= 33 = 243 のとき最大値 24 +1 12 π 20+ (2)g(8)=0 のとき 60 より sinc0 = -1 0≧0 の範囲で sinc0 = -1 となる最小の8の値。 は すなわち 0 のとき 最小値1-3a 2 D bsinco = -b 3 c>0より, clo= となり 3 8₁ = 2 となるから 12c <10+(-1)=( よって,OSTの範囲で g (8) の最小値が0 となるとき c0 であるから, 3π 2c より c≥ 3 2 f(8) g (0) の最大値と最小値がそれぞれ一致するとき 2α+1=26 かつ 1-√34=0 これを解いて a= √3 3+2√3 b = 3 6 √3 3 三角関数 ( 最大値は (2)=6(sin+1) +1 = 26 攻略のカギ! Key 1 psin0 + gsincosd+rcos'0 は, sin 20, cos20 で表せ sind と costの2次式 f(0) = psin'0+gsindcosd+rcos' の最大・最小は, 2倍角の公式から得られ る下の3つの等式を利用して, f(0) を sin20 と cos20 の式で表してから、 合成して求める。 sin20 sincost= 2 sin² = 1-cos20 2 1+cos20 cos2 0 = 2 2 asin + bcos0 は,rsin (0+α)の形に合成せよ 35 (p.149)

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English Junior High

(1)の答えがchoosing、(2)の答えがウ、(5)の答えがアで、それぞれなんでその答えになるのかと、 5⃣の本文を上から4行、4行、5行、4行、3行、2行で分けた時それぞれに題名を付けるとしたらどうなりますか? 教えて欲しいですm(_ _)m

5 次の英文を読んで, あとの問いに答えなさい。 <川越東改> Origami is the Japanese art of folding paper. To do origami, the artist starts with a square piece of paper. Some people like to use special origami paper that is two colors. The front of the paper is one color, and the back of the paper is another color. Other people like to use origami paper that has patterns on it. After ①(choose) your paper, you can find many instructions for folding the paper into different things. Many people enjoy (make) origami flowers, animals, or things ( 3 ). For all of these things, there are a few kinds of folds that you need to use. For example, sometimes you need to fold the paper in half. Sometimes, the paper must be folded from corner to corner. If you follow the directions carefully, you can create a beautiful paper flower or animal. However, origami is more than folding paper. First, origami is an important part of Japanese life. For example, nature is important in Japan. In Japan, people care about the seasons, weather, water, or other things in nature. Origami is also a part of nature. That is why the most popular origami shapes are things like animals. Birds, fish, flowers, and stars are all popular shapes. It is a quiet activity, and can calm the mind and body. People who do origami like the activity as much as the art. They like it because origami demands a lot of attention. When people think hard about creating something, they forget about their problems. This allows them ④ to calm down. ⑤ Origami is also good for teaching children. They also learn to work carefully. Also, origami has squares and triangles. These shapes are important in all kinds of learning. Origami helps children to learn about these shapes. Maybe you can try to do origami yourself. You only need some paper and a book of instructions. You can find instructions for many origami shapes on the Internet. instruction direction (1)①,②の( )内の語を適する形にかえなさい。 (2) 30( に適するものを, ア~エから1つ選びなさい。 (3) (4) 7 to paint with 1 to talk with 1 (2) making. to play with I to help with (イ) ④に適するものを,ア~エから1つ選びなさい。 Origami is also easy to learn. 1 Origami is also good for your imagination. Origami is also difficult to learn. I Origami is also good for your mind. ⑤にはA~Cの文が入ります。 自然な流れの文章になる配列を, ア~エから1つ選びなさい。 A Children must follow these steps exactly. B First, origami has many steps. C This way, children can learn to follow instructions. ア A-B-C イ A-C-B B-A-C I B-C-A (5)本文の内容にあうものを, ア~エから1つ選びなさい。 If you follow some instructions for paper folds, you can enjoy many different origami shapes. Learning origami gives us a good chance to help animals on the earth. You may feel tired if you try hard to do origami carefully. I The most important thing for children's education is origami. (土)

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