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Mathematics Undergraduate

統計学についての質問です。問題は画像1枚目、略解は画像2枚目、3枚目となっています。略解について、 q(r,θ)=1/(2π)exp(-r/2) R=-2log X になっていない事に関しては誤植だと思いますが、最後になぜR,Θに関する式から当該確率密度関数に従うのかが分か... Read More

【3】 確率変数 X,Y が独立で, [0, 1] 上の一様分布に従う確率変数であるとする。 このとき Z=V-2log X cos Y W=V-21og X sin Y とすると, Z, Wは独立であり, それぞれ標準正規分布に従うことを示。

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English Senior High

なぜ、to -45℃ ではなく、to as low as -45℃ と 表記するのでしょうか？

ートルまで育つ そして体重は約600 はる。 the Arctic / where polar bears live / can drop / 落ちることがある to as low as -45°℃. // マイナス 45℃まで。 ホッキョクグマが生息する these bears / are fully adapted / to sucha harsh environment. / How c これらのクマは 完全に適応している そのような厳しい環境に。 どのよう comfortably / in the extremely low temperatures / of the Arctic? //

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Science Junior High

(2)の¹∕₃ｘ²になる理由を教えてください。

点Pは,点Oを出発して, 毎秒1 cmの速さで, 点0を点Pと同時に出発して, OQ=OP となる 線分OA上を点Aまで動く点である。点Qは, 点0を通り,線分OAに垂直な直線をひく。 25 cm) 七の図のような, OA/CBである台形OARC 「右の図のような, OA//CBである台形OABC 同じ側にOD=25cmとなる点Dをとる。 「があり,OA=25cm, AB=8cm, BC=21cm, 正答率 D 3 2OAB=ZABC=90° である。 42 C。 21cm B Sem 8cm Bcm A 125c ように,線分OD上を動く点である。 D 0が点Oを出発してから秒後に, 台形OABCを線分PQが分けてできる 同彩のうち、点Oを含む図形をSとするとき, 次の(1)~(3)の問いに答えなさい。 [香川県] (1V 点Pが点0を出発してから25秒後にできる図形Sの面積は何cm?か。 (13t25)x&X5: 38X4 (1はti51x欲子 38 [ 152cmt ] (2V oSzS12, 12<x<25のそれぞれの場合について, 図形Sの面積は何cm?か。 それぞれxを使った式で表しなさい。 (12cm t8)x8定 253(44 - 80 |2→80 63 Fe Ho 20 0SaS12[ さ a ) 12S:<25[ そ) 言びcná 12SS25[-8

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English Senior High

最後の文について質問です。 和訳は、[では、ベスが提供するのを聞きましょう。] だと、言葉が変ですよね、、、 offerを提供すると訳したのですが、他の訳し方とかあるんでしょうか。

Garcia: 8) What an interesting experiment! What Megumi is saying is that according to this theory, genes determine our preferences in choosing a partner. Thank you, Megumi. Now, let's listen to 5 what Beth has to offer.

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English Senior High

英語の長文です！ わかる方お願いします

ロ文型/文の種類 社会 1 25 rh Chapter Time: 35 mnutes 1 英文を読んで、設間に答えなさい。 Most important easons for doing voluntecr work Number of hous students volunteered per month 1%of students help people or community 44% 104 eam something new 24% Sto 10 get work eperience 20% 11 or more other 12% St. Martin's High School conducts a survey of student volunteer work 。 every year. The survey results show that many students have positive atitudes toward volunteering. The graph above shows the average amount of time that students spent doing volunteer work per month in this year. The table s shows the most important reasons given for participating. The teachers at the school have encouraged their students to volunteer since 2009. Before then, few students did volunteer work. When Brian Amster, the present principal, first came to the school in 2008, he found that there was litle communication among students, their families, and the 10 Community. As St. Martin's High School was in a newly developed arca, more than half of the students and their families were newcomers, and they did not know cach other or the area very well. Mr. Amster thought this was not good for the students and the communiry. Mr. Amster came up with the idea of volunteer work. p He wanted his の 15 students to have more contact with the local people through helping those in need. The local people really welcomed the volunteer activities. Volunteering gave many students a chance to learn a lot, and their self-esteem improved. It was good for the community and the students themselves, too. Mr. Amster says, "In the beginning, most of the volunteer activities 4 20 involved helping old people. Today, however, more and more students are doing activities related to the environment, such as cleaning parks and other public areas. Parents are also encouraged to help, and cach year, more and more parents are participating." One thing that makes Mr. Amster especially proud is that most students continue voluntering even after graduation. さ

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