線形代数の直交補空間を求める問題です。一次元の部分空間なので直交補空間は2次元になると思い、写真のように考えましたが、上手く解けません。解説お願いします🙏

No. Date の直交補空間W! IR ² 0 7 10 15 20 121 W = spon | (4)} Out's kiss lad w の基底を1組求めよ。 Ans. X= XI X2 x3. x + ( 1 ) 11) EW² C13 C 183 42 = ( 1 ) F₁) X₁ + X₂ + 4 X 3 = 0 ( y +9₂ +443 =0

シータを0とπ/2で微分して+∞と-∞が出てきますが、それがx=0と2πで接するのとどう関係しているんですか？

82 媒介変数で y平面上で媒介変数0を用いて 精講 64 で求めた (1) 00 <2のとき, dx dy do do π れる曲線C上の点Pにおける接線がx軸の正方向と 6 (2) 点Pの座標を求めよ。 (1) Cのグラフをかけ. -=1-cos 0, (1) 媒介変数で表された関数の微分については 64 で学びました。 ここでは,それを用いてグラフをかく練習をしましょう。最大の ヤマは増減表のかき方です。 解答の中では,スペースの関係上 d'y をそのまま (途中を省略して) 使ってあります。 dx2 (2) 直線とx軸の正方向とのなす角をaとすると(ただし,一くなくそ の直線の傾きは tan で表せます。 (数学ⅡI・B58 解答 IC {=0 += sin0 より 0-sin0 d'y また, dx² (1-cos)² よって, グラフは上に凸. dy また, -=0 より sin0=0 .. dx <0 y=1-cos 0 sin (2+t) -0 1-cos (2л+t) dy dx dy 1 - cos0 >0 だから, 増減は右表のよう になる.また, 肝型革近線 dy lim =lim 0-2-0 dx t→-0 0-2°= f=2++ (≧0≦) で表さ sin 0 1-cos 11-sino) 1-cosa ((rospa 0 0 タテ型漸近線=dim 8+0 Sine 0 ī +8 の角をなすとき, 並びぶん do Jx 0=π(0<0<2πより) 0 0 IC 0 lim- =lim sin 0(1+cos 0), Sind ([toso) dy dy 0+0 dx 0→+0 1-cos²0 0-2=t とおくと, 02-0 のとき, t-0 の 注参照 √64050² + y 07 1-c050=0 0+0.2 π πC 0 2 50 (5) B 2π 2π 5 0 EXITY 010-20

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【ⅢI】 次の(A), (B)の設問に答えよ。 (A)14点,(B) 6点) (A) 次の英文を読んで下の設問に最も適切な解答をせよ。 特に指示のない選択式の設問は記 号を1つ選んで答え, "You may choose more than one option." と指示のある設問に対して複 数の記号を選ぶ場合は, アイウエオ順に解答すること｡ Mike: Hello Alex, long time no see! Alex: Hi, it's been almost two years since we last met each other! How were you doing? Mike: Until recently, I was frustrated that I could not meet my friends at university, but I was able to spend more time with my family, so I was okay. By the way, how did you like the online classes? Alex: Personally, I did not like them. It was difficult for me to maintain my concentration at home. Also, I could not resist the temptation of using my smartphone, because there was no supervisor at home who checked whether I was working hard or not. Mike: If you use your phone during class, the professor will definitely tell you off! Mo Alex: Another reason why I prefer in-person classes is that I can ask questions or have discussions with my friends. In the Pre-covid-19 era, when I had questions, I went up to my friend Thomas, one of the best students in our faculty and he taught me everything that I did not understand. Mike: That was a huge issue for me as well. If I have questions piled up, then I am more likely to dislike the subject and have more anxiety towards it. So, my friends and I decided to have meetings online on a regular basis and this helped me to worry less about online learning. Alex: That was really ( 1 ) of you, I should have done that! So, are you in favor of online learning? Mike: Yes, although I have less face-to-face interaction with friends, I like online learning more because I do not have to spend a lot of time commuting to school. I live far away from university and it takes two hours for me to get here by train. B(A) Alex: Really! I did not know that, what time do you wake up? Mike: I usually wake up at 5 am. Alex: That's so early! What do you do on the train? Mike: I just do netsurfing and I do not feel that I use my time productively on the train. If we can continue to take online classes wherever we want, we can get more flexibility in our schedules, We won't have take the time to commute to the university to attend classes, or if we like it, we may even be able to watch lecture videos on our phones while traveling by train. Alex: I understand your opinion, but didn't you have any technical problems? Mike: I only had a few. Besides, most of the professors posted recorded videos of lectures after class. So, I watched the recordings when I missed some parts. Furthermore, I could study at my own pace and the videos allowed me to digest what I had learned. Alex: That's a good point, but it had an adverse effect on my learning. Mike: How? Alex: I started skipping my online classes because I thought I could just watch those recorded videos later. So, just before exams, I had so many videos to watch. Mike: Maybe, traditional classroom settings might be better for people like you. Alex: I think so. Oh, it's time to go to class. Mike: Oh, yeah, have a good day. Alex: You too! 問1 NOTES Topic of the conversation: (2) Standpoint Basis Mike (3) (5) Choose the best one to complete blank 1. 7 because cruel clever I kind 2 Choose the best title to complete blank 2. 7 How to get good results at university Technical issues in online classes Safe remote learning at home I Online learning or learning face to face Alex (4) (6) -11-

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【Ⅲ】 次の(A), (B)の設問に答えよ。 ((A)14点,(B)6点) (A) 次の英文を読んで,下の設問に最も適切な解答をせよ。 特に指示のない選択式の設問は記 号を1つ選んで答え, "You may choose more than one option." と指示のある設問に対して複 数の記号を選ぶ場合は、 アイウエオ順に解答すること。 Mike: Hello Alex, long time no see! Alex: Hi, it's been almost two years since we last met each other! How were you doing? Mike: Until recently, I was frustrated that I could not meet my friends at university, but I was able to spend more time with my family, so I was okay. By the way, how did you like the online classes? Alex: Personally, I did not like them. It was difficult for me to maintain my concentration at home. Also, I could not resist the temptation of using my smartphone, because there was no supervisor at home who checked whether I was working hard or not. Mike: If you use your phone during class, the professor will definitely tell you off! Hot Alex: Another reason why I prefer in-person classes is that I can ask questions or have discussions with my friends. In the Pre-covid-19 era, when I had questions, I went up to my friend Thomas, one of the best students in our faculty and he taught me everything that I did not understand. Mike: That was a huge issue for me as well. If I have questions piled up, then I am more likely to dislike the subject and have more anxiety towards it. So, my friends and I decided to have meetings online on a regular basis and this helped me to worry less about online learning. Alex: That was really (1) of you, I should have done that! So, are you in favor of online learning? Mike: Yes, although I have less face-to-face interaction with friends, I like online learning more. because I do not have to spend a lot of time commuting to school. I live far away from university and it takes two hours for me to get here by train. Alex: Really! I did not know that, what time do you wake up? Mike: I usually wake up at 5 am. ant mo Alex: That's so early! What do you do on the train? Mike: I just do netsurfing and I do not feel that I use my time productively on the train. If we can continue to take online classes wherever we want, we can get more flexibility in our schedules, We won't have to take the time to commute to the university to attend classes, or if we like it, we may even be able to watch lecture videos on our phones while traveling by train. Alex: I understand your opinion, but didn't you have any technical problems? Mike: I only had a few. Besides, most of the professors posted recorded videos of lectures after class. So, I watched the recordings when I missed some parts. Furthermore, I could study at my own pace and the videos allowed me to digest what I had learned. Alex: That's a good point, but it had an adverse effect on my learning. Mike: How? Alex: I started skipping my online classes because I thought I could just watch those recorded videos later. So, just before exams, I had so many videos to watch. Mike: Maybe, traditional classroom settings might be better for people like you. Alex: I think so. Oh, it's time to go to class. Mike: Oh, yeah, have a good day. Alex: You too! 問1 NOTES Topic of the conversation: ( 2 ) Standpoint Basis Mike (3) (5) Choose the best one to complete blank 1. 7 because cruel clever I kind 2 Choose the best title to complete blank 2. 7 How to get good results at university Technical issues in online classes Safe remote learning at home I Online learning or learning face to face Alex ( 4 ) (6) -11- 18

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(1) My father talks ( 1 but (2) If it ( 1 were (3) (3) If you had not helped me, I ( cannot finish could not be finished (4) If I ( 1 know ) sunny, we would go hiking . (2) is can see (9)( (1) (2) (3) ) he understood everything. as if 3 without (6) I ( ) you if I had enough time. (1) (2) could see (10)( (1) (3) (5) If I had had enough money then, I ( could buy ale n 2 (1) could have bought (8) He wishes he ( can drive ) (2) 央文として正しいものを1つ選べ ) Keiko's address, I would write to her. (2) am knowing (3) would know (3) could my work. (2) (7) ( ) I you, I wouldn't do such a silly thing. Were 1 Am (2) Would ) If I only could speak French ! If only I could speak French ! (2) could not have finished can have finished ) the bag. bought had bought cannot see ) a car; taxis are so expensive. could drive ③3③ will drive ) If it was nice tomorrow, we will go there. If it had been nice tomorrow, we will go there. If it is nice tomorrow, we will go there. and 4 will be 4 knew If could have se (4) drives Only if I could speak French !

びっくりするほど英語ができず、分かりません。教えてください

I'm from Mexico. You're from Brazil. He's from Japan. She's a business student. It's an exciting city. We're in the same class. They're my classmates. 2. 3. I'm I am you're = you are he's he is she's she is it's it is Nagoya. we're they're = we are they are A Complete these sentences. Then tell a partner about yourself. 1. My name is Aiko Yoshida. Possess brother is a college student. name is Matias. sister is a student here. our their GRAMMAR PLUS see page 132 adjective my your his her its from Japan. from Santiago. Angelica, but everyone calls me Angie. a student at City College. in Las Vegas. family is in name is Haruki. a really nice city. parents are in Chile right now. last name is Newton. parents are on vacation this week.

どうして垂直二等分線の上側になるのですか？

Check 例題 46 点の存 複素数が次の条件を満たすとする。 (i) (z+1/≤1 (1) z存在する領域を図示せよ。 2i 2+2 (2) に対してw= (ii) (1-i)2+(1+i) z ≥0 とおく.点wの存在する領域を図示せよ 方 (1) (i)(z+1|は点P(z)と点A(-1)との距離, すなわち, AP1 z=x+yi (x, y は実数) とおいてxとyの関係式を求める. (2) 例題40の考え方 (ii) を利用する. ■答 (1) (i) 複素数zで表される点をP, -1 で表される点をAとする。 ここで,|z+1|=|z-(-1)|は点P(z)と点A(-1)との距離を で,|z + 1/≦1 は AP≦1 となる。こ したがって、点ぇの全体は,点A(-1) を中心とする半径1の円の ・① および周上を表す。 (i)z=x+yi(x,y は実数)とおき, (1−i)z+(1+i)z≧0 に代入すると, (1−i)(x+yi)+(1+i)(x-yi)≧0g= x+yi-xi+y+x-yi+xi+y≥0 よって, 2(x+y)≧0より x+y≧0 (2) ①,②より,求める領域は右の図の斜線部分 (境界線 を含む) 2i (2) w=- において, zキー2より,両辺に z +2を 掛けて,w(z+2)=2i 2+2 10, 20 また, w≠0 より,両辺をwで割って, sali-1-3) 2010より、両辺に |w|を掛けて, |2i-w|=|w-2i|≦|wl ....... ④ z+2= 2i したがって、 z=2-2.③ となる. w ③を z +1≦1に代入して, 2-2+1≦1より。 |2i-w-12i-wl≤12-2+1|-|²06 w 2ia W (1-i) iw-(1-i) ww-(1+i)iw-(1+i MAORKE 010 よって, B(21) とおくと,④は線分 OBの垂直二等分 線の上側の領域を表す.(境界線を含む) また ③ を (1-i)z+(1+i)z≧0 に代入して (1-12-2)+(1+1)(22) 20 www>0より,両辺にww を掛け (1-i)(2i-2w)w+(1+i)(-2i-2w) w≥0 ( 2(1-i)(i-w)w-2(1+i)(i+w)w²0 選手あすから 21-1 W |2i-1 Tw| ま (2) 練習 46 * (6) と ***

答えがなく分かりません お願いします

I'm from Mexico. You're from Brazil. He's from Japan. She's a business student. It's an exciting city. We're in the same class. They're my classmates. 1. 2. 3. actions of be I am Nagoya. I'm you're = you are he's = he is she is it is she's it's we're = we are they're they are A Complete these sentences. Then tell a partner about yourself. My name is Aiko Yoshida. = Possessive adjectives brother is a college student. name is Matias. sister is a student here. our their GRAMMAR PLUS see page 132 my your his her its from Japan. from Santiago. Angelica, but everyone calls me Angie. a student at City College. in Las Vegas. family is in name is Haruki. a really nice city. parents are in Chile right now. last name is Newton. parents are on vacation this week.

大問3の解答はこれでいいでしょうか？ また、大問2の(2)はおそらくm=5なのですが、ひとつひとつ合成して答えを出すのはいけないでしょうか？

[2] 複素数を成分とする3次正方行列全体のなす複素ベクトル空間をVとする. NEV をN2 ≠ 0 および №3 = 0 をみたすものとする. ただし, 0は3次零行列を表す. (1) 3項列ベクトルu∈C3 で, ベクトル N2u, Nu, u がC上線形独立となるものが 存在することを示せ. (2) 線形写像 f: V→Vを f(x) = NX - XN (X EV) で定めるとき, fm = 0 となる最小の正の整数m を求めよ.ただし, fm は f の m m 回合成写像 fm = fo... of を表す.

これらの問題はこの通りで合ってますか？少し不安で💦

文字が1つの式の値 次の問いに答えなさい。 1 POLIC (1) x=-3のとき, US (2) x=-4のとき, =-4 ( - 3 8 3÷82-132×(-4)×(-4) D = +=-6 16 - 1 1212-1/23 g の値を求めなさい。 6 - (-_-1-³-2 4-X (-3) — — — X(-3) == ~=+=+2 XXI +6 8 8 = (3) x=6のとき, -4- の値を求めなさい。 =-4-18÷(-6) 18 6 =) = - = 1X (+3) X 6 0010 FA ¥3 32 x2 の値を求めなさい。 3×4×42 8x1xl 18 IC 128 (5点×3) 1メガ -4- 16 3 - 16 3 +2