請問這一題該如何解呢？

Zrcrosot isinu). A BE ( cos 6&tisinso) bo 64 23 tot 60 dakt anot kqu 66 : 自然數n 的最小值為 若,2(Cos 95°+isin95°)與V2(cos175°+isin 175°)均為複數z的n次方根,則 Z = ,此時2 年七 6-787 ) i [stati 23. ) I n Z & rcrosotising) 2 h = 7" (cos no +isinao) it 75 15+75 +150 e to k pe 950 tost 5 kt 主題 38 複數極式與棟美弗定理 179)

請問這題要如何解(高二數學4A 2-2空間中的直線)

5. 設為通過(0,1,0)與(2,0,1)兩點之直線,則x軸上距離L最近之點為 (3)。 (20分) (1,0,0) (2, 7, 1 st=5 x=20 9-1-t z=t t=0 ( (2t-S, I-t, t)(2, 1, 1)=0 0 4t-25 -1 ttttco 25+2t=|| 2-stat 2t0 et Pet x1 **(1-25 +t 42 4+ x + x² + t zerler st 35= 1 20-2 s=f

求

六、文意選填:10%(〈請忽略選項大小寫 ) We al know that Sleep is very important for us. However have yo r whole day from the minute CVer AN呈 ting enough Sleep? Activitles these days fill up oul that we wake up. 一2. , we realtty need enoueh Sleep toOr Gur body and mind to get enough rest. All living things need sleep to 一3 and that incluqes us. Some _4. believe 了at our brain is working to OrganiZe information white we"'re asleep. 5, actty nine and a you are teenagers today sleep for about seven hours, but most of them need cx ay. That is Why the State of California just Tecently paSSed ala quarter hours of sleep a d S:30 a.m. for high schoots andq 0! saying that the first-period bell can ring no earlier thaw am. for middle sehools. (A) survive_(B) wondered (0) secientists (Dy) therefore (5) on average 必 2 8 4 Sy

想問第8格的選項為什麼選D 感謝~~

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第三題 求救🙇

(a) 0 可 4又下 KW人dd (b) 1 | 字 1 wo (e) 以上和皆非. None ofabove. Fvxpres< 1n as apinary mmhe 人24 2014..+22 +go.os 7 /~ Statementis true? (log2 3 = 1:58,log2 5 = 2:32, log27二2 ~ (a) gqo= (b) giI= 1 (c) g72= 1 (d) 7 三 22- (e) 以上和皆非. None ofapbove- A 一2) + 2X(X一1), 4.y三了x) =(x一0DGx一2) 一 而2017) =? (a) 2016. A ~yMtCt1M22 (b) 2017. Wi (c) 2018. ~ XX

可以请教一下第十题吗？ 谢谢你😊

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