置換積分と部分積分の使い分けがわかりません。例えば写真の問題は、置換積分を使えると言われたらわかるのですが、部分積分がいけない理由がわからないです。教えていただきたいです。

x (1) dx 1-x2

この3問なんですけど、makeにsをつけるのとつけないのってどうやって区別（？）していますか？？教えてください🙏

3 次の日本文の意味を表すように、空所に適する語を書きなさい。 □ (1) 柔道を練習することは私たちを疲れさせます。 Practicing jude makes s □ (2) 歌うこととおどることは彼を前向きにします ng make Gill Qim Singing and dancing □(3) 本を読むことは私を幸せにします。 tired. Desd him positive. Reading books makes se happy. One

写真に丸く囲った図について、なぜこのような図になるのか教えてください🙇🏻‍♀️

π tan6=30<< のとき, (1) sin, cose の値を求めよ. (2) sin 20, cos20の値を求めよ. 精講 (2)54の加法定理の式に, α=β=0 を代入すると, sin20, cos20 に関する公式が導けます. これが, 2倍角の公式です. 解答 (1)tan=3 のとき,<a<だから、 3 1 右図より, sin0=- , coso= 10 /10 10/10 13 e 1

数学Ⅲ 積分法の問題です この問題でなぜ絶対値が外れるのかわからないので解説して欲しいです🙇‍♂️

□ (2) S dx cos (2x-1) cos (2x-1)

間違っている英文を3つ選ぶのですが、7 の他にあと二つがわかりません😭どなたか教えてください🙇‍♀️

1. 2. 3. 4. 5. 6. 7. 8. I am sure that he will be able to solve the problem by himself. If I were you, I would tell the truth to your teacher right now. My father told me that the sun rises in the east every morning. It is one of the most interesting book I have ever read in my life. She has been lived in this small town for more than twenty years. This computer is much more expensive than the one I bought last year. I am looking forward to see my friends at the school festival next week. The song which was sung by the singer became very popular all over Japan. You should finish your homework before you go to play soccer in the park. 10. He is too busy to help us with the heavy boxes in the classroom.

下の英文について教えていただきたいです。 この文の最後には、"as now "が省略されているのですが、その省略が見抜けないです。 "as now "を補わなくても、意味が成り立つ気がするのですが、文中のso "も"as now "に呼応するためのものであるらしく、よく分か... Read More

p.88 e UNESCO employees have been long devoted to increasing international cooperation in the areas of education, science, and culture, but most have never before been so deeply convinced of the importance of their work.

回答を教えてください。よろしくお願いします。

ete. best achievements motivate overloaded proactive reflect stimulation When people are bored they often feel dissatisfied and uncomfortable. This makes them look for external 1) such as using their smartphones. However, as there is so much information available to us, when we do that, we can feel and stressed. One way to avoid this is to use our free time to 2) actively think and 3) this way can 4) also lead to great 5) on our thoughts and feelings. Using boredom in th people to find new and exciting things to do. It can and advances on a societal level. But, to gain these benefits, boredom must be approached in a 6) rice way.

この問題の解き方を教えてください。物体の運動量の和は保存されるから東西方向と南北方向で運動量を足さないのですか？

190. 平面上での分裂 なめらかな水平面上を北東の向きに進む 質量 5.0kgの物体が、 3.0kg のA、 2.0kg のBの2つに分裂した。 Aは北向きに進み、 Bは東向きに10m/sで進んだ。 北 A /10m/s 3.0kg B (1) 分裂前の物体の速さを求めよ。 (2) 分裂後のAの速さを求めよ。 92章力学I 2.0kg 例題24 5.0kg 東

回答を教えていただきたいです。よろしくお願いします。

the whole hotel. 6 Complete the sentences using a comparative or a superlative. Use less / least or more / most and add the or than where necessary. 1 There were parties every night. It was (noisy) street in the city! 2 They like staying in (unusual) accommodations that they can find. 3 There's usually no one there. It's probably 4 (crowded) place in town! (good) memory I have is the night we camped on the beach. It was amazing! 5 I was shocked by the campground's prices! It was (expensive) the hostel. 6 Washing in cold, salty water was 10 (bad) being dirty. 立

高校英語の問題です。 (21) (26) (24)の答えを教えてください🙇‍♀️

3 正 問題 誤りのある箇所を選び、正しい形を書きなさい。 22は誤りのある箇 所がなければNO ERROR を選びなさい。 121 In lists of the most speaking languages of the world, it has been ② customary to rank them by order of their total numbers of speakers, although there are considerable difficulties in gestimating more than very approximate totals. (学習院大) りのある箇所 正しい形 □□ 22 Nothing seems to irritate William more than having to explain his actions in that unfortunate ③ matter to everyone with who he talks. NO ERROR (早稲田大) 祭りのある箇所 正しい形 4 with whom □□ 23 The bus arrived ② lately on account of rain, so we ③ missed the train we were supposed to take. (桜美林大) D 誤りのある箇所 正しい形 to lately □□24 By means of my excitement about the interview tomorrow and the ② noise ③ from upstairs, I couldn't sleep. 誤りのある箇所 had 正しい形 small ■□ 25 Frankly speak, I find the class boring. (立命館大) (東洋大) 誤りのある箇所 Charlo ③ 正しい形 spoke □□ 26 Another award winner was “Paro," a furry seal* which has sensors beneath gits fur and whiskers. When the seal is stroked, it responds by opening and closing its eyes and move its flippers**. * furry seal : 毛皮におおわれたアザラシ **flipper : ひれ足 誤りのある箇所 正しい形 (中央大)