この2問の解き方を教えてほしいです🙏🏻 両方とも下に書いてあるのが答えになります。

(4) d²y dt² 11/1/20 cos(πt) = 0 cos(nt) + C₁t+C₂ (C1, C2 は任意定数)

(3) 1/2×6×AD×Sin∠CAD＋1/2×3×AD×Sin∠BAD=9√15/4 (S)というやり方で求められない理由を教えてください🙇‍♀️

問題ⅢI. 三角形 ABCにおいて, AB = 3,BC=CA=6である。 ∠BACの二等分線と辺BCの 交点をD,辺 ACの中点をE,線分 ADと線分BE の交点をFとするとき. 次の問いに答 えよ。 (1) cos ∠ABC の値を求めよ。 (2) 三角形ABCの面積Sを求めよ。 (3) 線分 ADの長さを求めよ。 (4) AF:FD を求めよ。 Matu

助動詞の問題です。（）にcan、may、mustのどれかが入るのですが分からないので教えてください！ ( )she really be his aunt?

以下の英文について質問があります。 Sharp increases in demand for new homes are fueling concerns over potential shortages in building materials. この文のoverがど... 続きを読む

代数学概論 （1）の方は写真のように証明出来たと思うのですが、（2）の証明が上手くいきません。 どなたか、解説お願いします🥺💦

5 a,b,c を線型空間 V の線型独立なベクトルとする. このとき, 次を示せ: (1) (a+b+c, 2a + 3b, 3a +5b-c) c (a+c, a+b, −b+2c) (2) (a+b+c, 2a + 3b, 3a + 5b-c) (a+c, a +b, −b+2c)

下から4行目、the Omega Advance line は訳だとオメガアドバンス社でしたが、lineを調べても会社という意味はなかったのですが、このlineはどういう意味で使われているのですか？

T1-46 Questions 65 through 67 refer to the following conversation and list. W: Our printer isn't working as well as it used to. The lines and characters don't appear sharply on the page. M: I noticed that too. Everything looks like it has a shadow. W: It's good enough for internal documents, but it could make a bad impression when we send letters to clients. M: You're right. Well, the warranty on it expired last year. We should probably start looking for a new one. W: I was thinking the same thing. I'd recommend something from the Omega Advance line. I left their brochure on your desk. I don't remember the name of the model, but the second cheapest one looks like it would best meet our needs.

大阪公立大学の入試問題なのですが、問4の【ウ】の並び替えがわかりません。また，【ウ】を含めた一文の文構造も教えていただけると嬉しいです🙇‍♀️

問4 次の語を並べ替え, 空所[イ][ゥ]に入る英文を完成し, その英文の2番 目と7番目に来る語を番号で答えよ。 [イ] accustomed 2 their (⑤5) spending (6) [ゥ] ① herbivore (5) as income (3) disposable 4) are (7) to (2) characterized ③ (6) obsessed with 7 fashion (4) men

possible sign …について これはどのように品詞分解して考えればいいでしょうか？ それともa possible sign is~というイディオムですか？ a possible sign Pyongyang ってなんですか？？？

0:37 < 'Unusual' level of aircraft maintenance se... the japan times 8° = 4G 35 Passengers board an Air Koryo aircraft at Pyongyang's airport in April 2017. Experts have said that no cross-border air travel service is 'believed to have taken place' for North Korea throughout the entire pandemic period. | REUTERS AFP-JIJI SHARE May 24, 2023 SEOUL - Recent satellite imagery has shown an "unusual" level of aircraft maintenance at North Korea's main airport, a monitoring group said, a possible sign Pyongyang is moving to resume international flights. North Korea has effectively sealed its borders since early 2020 as part of its drive to deal with the coronavirus pandemic, with all flights cancelled. a

質問です。 the presidential election で、presidential は形容詞だと思うのですがここをpresidentの名詞にすることは可能なのでしょうか？ 詳しい解説をして頂けると有り難いです。どなたかご回答お待ちしております。

下線部はどのように訳せばいいのでしょうか？ ↓ニュースの原文です https://www.japantimes.co.jp/news/2023/01/02/national/liaoning-carrier-okinawa-jets-scrambled/

0:20 8月6日 (日) Japan scrambled jets to monitor Chi... the japan times Japan monitored the operations after the Chinese naval group, which included missile destroyers, sailed between the main Okinawa island and Miyakojima island into the Western Pacific from the East China Sea on Dec. 16, Japan's Defense Ministry said in a press release. Before returning the same way Sunday, the Chinese carrier conducted more than 300 take-offs and landings of fixed-wing aircraft and helicopters, the ministry added, although it did not report any incursions into Japanese territorial waters or skies. While China has conducted similar operations in the past, including in May, the latest large-scale military drills close to Japanese islands come after Japan 45%