下から2行目の det(Pk Pk-1···P2 P1A) =det(Pk)det(Pk-1)···det(P2)det(P1)det(A) となるのが分かりません。基本行列の積から行列式にしたものは1つずつの行列式の積と値が一致するのでしょうか？

No. Date TAB|= |Al|B|の証明 Aが正則でない場合 |A1-0 であり、 ABも正でないため 1AB1-0 したがって |AB|=1A1|B|-0 Aが正則の場合 正剣行列Pは基本行列の積で書けるから 正カ行到Aに、正貝り行列Pを左からかけると IPA|- |R PeT AP, A| - |A||A-14…1211|A|- Iplla| 以上から 1AB|=1AL(B|

教えていただきたいです。よろしくお願いいたします。

B 下の接続詞を使って、 Kaiに関する文章を完成させましょう。 and because but if so Kai is outgoing, positive, serious ambitious, 2 also stubborn. A big company is best for him he can meet new people, and he has more opportunities for advancement. He thinks he can he works on a team. He likes 4 develop a better product immediate feedback, he prefers face-to-face communication. 5 eupsy

範囲は英語の比較です。 2と4の答えを教えていただきたいです。

A. 例にならい、空所に下線部の単語の比較級か最上級を入れて次の1~4の文を完成させましよ う。 例 Ican't type very fast. You type ( faster ) than me. 1.Ican't speak English very well. You speak it ( better) than me. 2. The dinner was expensive. It was ( than l expected. 3. Jenny is very smart. She is the (smartest) person l've ever met. 4. It was a very difficult test. It was the( ) test I've ever taken.

TOEICの文法問題です。 解説のところの″述語動詞を修飾するのは副詞なので、″の意味がよく分かりません。 解説お願いしたいです。

14. Ms. Kelly was able to solve the issues with the new software after consulting Mr. Lee in the technical support department. (A) easily (B) easy (C) eased (D) ease の空 文 会る。 合 代中

英検準一級の英作文の添削をお願いします。見にくいところがあれば言ってください。

Date No. Topic: These days more peple will do so in the' tuture? Some pegple buy things. on the Intermat.Do you think I think that motre people will buy things . on the Internet 1r T have two reasons to support my opinion in tenms of price |2 and technolgy 2 Fist, we can buy things on the Intermet that is cheaper than buying them at shops, Some Intemet shops' deliver fee 10 is free. It is goのd tor us to get a good deal of products. 14 Also, peaple can keep thair rmoney. 6 Second, peaple do nat have to go shopping. at shops. 1o f there are people who are buy to buy things what they wast, 15 they con buy them any winere using, their internet or smarphene 10 I think eldery pegple get products eaily. For these reasens, buying things on the Internet will be 15 more necesiory in the future (121uerds) ニ

線形代数の逆行列の範囲での例題の一部です。 マーカーで示した、この式変形はどのように行うのでしょうか。

1 について、次の問いに答えよ。 2 1 A= } x=C) X 12 x (1) AX=kX となる定数ん, xの値を求めよ. 1 (2)(1)で求めたxの値をx1, X2 として, P= X1 1 とす X2 るとき,P-'APを求めよ.ただし,Xi<x2 とする。 -6 )x (( IY) k 0 kX=kEX 0 &Xと考える。 k. 21 1 (1) AX=kX より, 1 2 x x 2-k 1 lo) ニ 1 2-k 2-k B= 1 とおくと,4キ0 のとき, 1 2-k/

英検準一級の英作文の添削をお願いします。見にくいところがあれば言ってください。

Date No. Topic: Do you think thatJapan, is a good Countey tor peagple with' children to live 'in? I do not think that Japan is a god Coanty fr peaple with children to live in. I have two reasons to support my opinion in Terms of Cost and lacking of doy care. Fist parents need much money to raise their childien. For exomple, there are meal_Costs and school tuition. 食安 They high school's Cast are free in Japan, baut high school ondumivecity are higher then we expect. Elemertay sechol and jurice Cost a lot of maney Itis had fr pareats to pay. Seund, the number of bath parents wmerting is increase there doys. 天働き So they have no time for dey caren If parents use a kindergaden, they Could not ue it because many kindergardens Cannat acept. There is he adult to see children. For these reasns, it is not good for people with children to lie in Jopon. (142 wordr)

英検準一級の英作文の添削をして頂きたいです。見にくいところがあれば言ってください。よろしくお願いします。

Date No. Topic: Is the recent increase in the nigyber of penple changing jobs in Japan a pasitive development Y I de not think that the recent increase in the. number of people 15 (7 changingjobs in Japon is a pasitive develepnet, I have reasons to support my opinion in terms of effect on the economy and unenplymoant Fict if the number of peaple changing jobs increases, Some Companies will in Jopan. Eflect on the economy will larger than before. bankrupt. It would be a serious problem Second, it is dificult for them to change their jobs becouse theyshould remenber new job Companies do not have enough time to teach working and people changing jo would be tired to remember. I think companies Could not get s. adventagpe For these reasons, the number of people changing jobs in Japan is a negative develapmat. (123 words)

英検の英作文の添削をお願いします。見にくいところがあれば言ってください。

Dat ici Agre or disagree Elderly pegle Should be taken core of by their rather than sent to nursing homes I agre with the idea that elderly pesple should be taken Cae of by their tailies rater fhen Seat to nursingg homes, I have Two reasons To suport may opinjon in Tecms of better core and financial burdon r on family. Fist, families con be berer core than nursing homes because they know abart elderly faily members mme. If nuring homes tale Care of elderly pople,they con not be the best support. L It is easy for families to take care of them. Secondi Senting to nursing hemes Cost mare. If eldery paple are taken core of by nursing home s, thair families have to pay charge. It is difficat to pay high fee. for these reasons, elderly people should be taken care of hot y neriag homes but by their foniliea

丸つけたところ答えです。 どれか一つだけとかでもいいので、 問題の解説お願いします！！

I 各問に答えよ。 (32点) C DG。 lon 8 T マ-Dとセ に において, 空所を満たすのに最も適切なものを,それぞれのA~Dのうちから 問1 9 16 1つ選べ。 a C へしたがいい (Shonld) fo hod better Id better have' it I have a sore throat. gp peu を B 9 A checking to be checked C /to check D checked 21 doM b etM bs tM married for ten years when their first baby arrived. Tom and Mary n 10 A had B had been C have been D have uGm down the stairs. 11 He came 9 w sdv ahnds bl to have run D A having run B to run C)running 12 You'd better money to John. He won't return it to you. i D do not lend A not to lend B not lending C not lend sdhs avon tnde you because you broke your promise. inirft 1 Beth is angry ST at with 13 A B on C to D for 0 as pom 2om Oficer: “May I see your passport?" Visitor: 0 o 14 omge B A It is kind of you You are welcome C/ Here you are D Don't mention it dt Ro d 9big avol sar zdT fa9iblida uoて is apert on UK 20n AらL icp 1G e I am afraid my watch is five minutes 15 sldshotmoo j A rapid C fast e B after D Swift 0eo2 8WgtinngL MG honGLA DIDCP 1 We found a truck Odbure dbua and go10 bsaingrua na ms 16 on its side in the middle of the street after the hurricane. T COLpaho TG Spo A lied B lie C lies D lying 0ods do日n 0 sm blod 2sd gere ncra o AC bradaun hhohdok innsl oloH196 latoM 0liniol a bad noid egona