上は理解出来るのですが、下は1/tanxを微分するとなぜ-1/sin^2xになるのですか？ よろしくお願いします🙇

(tant) (ton) = 8052x = Sin²λ 2 dt = +cosx- taux + c d2 sin²x 2 +C taux 気温 (32

25の(3)が自分で解いてもこの答えになりません。 どなたか教えていただきたいです🙇‍♀️💦

となるよ 大双 1.18, 1.19 243点A(1,π), B(z+2,3), C (4,æ +5) が同一直線上にあるように実数の 値を定めよ. 25 次のd, について、6となるように実数の値を定めょ. (1) d=(4,2), 6 = (2,k) (2) = (k-6,1), b = (2,3-k) (3) a = (k, 1), b = (k + 1, 2k + 2) 問1.20 教問1.21

英検2級の要約問題です。 添削をお願いします。 字数の目安が45〜55語と書いてあるんですが、61語はアウトですか？

出題例 2級 Writing 既存の 「意見論述」 の出題に加え、 「要約」 問題を出題 以下の英文を読んで, その内容を英語で要約し, 解答欄に記入しなさい。 ●語数の目安は45語~55 語です。 ●解答欄の外に書かれたものは採点されません。 ●解答が英文の要約になっていないと判断された場合は, 0 点と採点されることがあります。 英文をよく読ん でから答えてください。 When students go to college, some decide to live at home with their parents, and others decide to rent an apartment by themselves. There are other choices, too. These days, some of them choose to share a house with roommates. What are the reasons for this? Some students have a roommate who is good at math or science and can give advice about homework. Other students have a roommate from abroad and can learn about a foreign language through everyday conversations. Because of this, they have been able to improve their foreign language skills. On the other hand, some students have a roommate who stays up late at night and watches TV. This can be noisy and make it difficult for others to get enough sleep. Some students have a roommate who rarely helps with cleaning the house. As a result, they have to spend a lot of time cleaning the house by themselves.

図形と方程式の範囲です。 教えて欲しいです💦

10 練習 2点A(-3, 4), B1, 4) を結ぶ線分ABについて、 次の点の座標 6 を求めよ。 (1) 3:2に内分する点 C (2) 3:2に外分する点D (3) 2:3に外分する点E (4) 中点M

どうやってa2乗＋2a -4＝0がa＝-1+-√1の2乗＋4／1になるのかがわかりません。教えてください

a²+2a-4=0AJR これを解いて a= -1±√12+4=-1±√5 (2) 2次方程式であるから 1 p=0 x=1 が与えられた方程式 21

正六面体が正多面体として存在しないのって何故ですか。 正四面体を１つの面でくっつけたらできそうだなと思ったのですがなぜないのでしょうか…🥲

不等式の証明なのですが、全く分かりません😢 どなたか教えてください🙏 なぜそうなるかも教えて下さると有難いです💦

V 5 チャレンジ問題 a2+b2+c2≧ab+bc+ca を証明せよ。 また、等号が成り立 つのはどのようなときか。 N N 12 N S 「 +

組立除法を簡単に教えていただきたいです🙇‍♀️

穴埋めの問題です。答えと考え方が知りたいです

15 11 10 5 This article shows ( students / *sharing / other / ideas/is/ with) useful for learning. In one *experiment, two groups of a ( あ ) students ( to solve the same math problems in different ways. Those math problems were difficult.] The students in both groups had about *equal math skills. In the first group, the teacher told students to listen to him carefully, and ask him questions about the way to solve the problems. In the second group, he only told to *exchange their opinions. After a while, the students in the first group found the right answers. They asked him many questions easily and didn't have to talk *among their group members. The students in the second group talked a lot. But they were not able to find the right answers *by themselves, and *finally he gave them some advice. Later, the two groups were (give) a test on the same kind of math problem. Can you *guess the *result? The second group got much group. By (work) hard together without remembered better how to solve the problem. solve problems is more important results than the first (ask) for teacher's help, the students I think *putting our heads together to just getting the answers in a short time.

四角錐CADPBの体積は、四角錐DPEFCの体積より32cm3大きい。このとき、線分BPの長さを求めなさい。 この問題を教えて欲しいです。

A 10 cm--- C A 6 cm B 10 cm 8cm D E F P