想問這兩題克漏字

1 With thirty-five active volcanoes, Iceland is known as a land of seismic activity. In April 2 bringing chaos to transportation systems across a minor volcanic eruption on the island Europe. The eruption, 3 the Eyjafjallajökull glacier in southwestern Iceland, released clouds of ash that drifted across several countries in northern and Western Europe. For several days, nearly all flight in the region were with hundreds of thousands of passengers unable to start their 4 journeys or _5_stranded abroad. Pec (A) that was (B) there was (C) what was (D) it was QA (A) ended up (B) got involved in (C) gave rise to (D) arose out of

為什麼凹透鏡不能成像？？？？？ （為什麼不能像這樣👇

5) Double

想問為什麼用現在完成式

下午 10:11 9月7日 週四 單一選擇題 (A)Did Fred: him to double check. (B) Does 學習總表 (C)Has (D)Will ehanlin.com.tw @ 自我評量 Leo decided to join at the beach cleanup next Sunday?Ken: I'm not sure. I need to call ******** ***** ***** ******* ********** 下一題並移除 O 解析:主詞 Leo 為第三人稱單數,現在完成式助動詞用 has。 解題救援 個人題庫 正確 下一題 W 複習範圍 現在完成式 剩餘錯題 10 題 字字字字◆ **************** 45% 手寫板 O 回報題目錯誤

請問這題為什麼只能先對y積分？只是因為先對x的話積不出來嗎？

Evaluate the double integral: f(x, y) = ye; R is bounded by x=2 2 and y=0. ud hisborod【107 東吳巨資】 解:積分區域R如圖,只能先對 y 積分 s! Si yet" dx dy - Syex! + dy 3X² So ye. 314² dy 4 = site dy A R x = | 2x y=2x [[ ye²d4 = ['ƒ”ª" ye^¹ dydx = ['-—- y^²e²" d dx R |y=0 y 4 y=2x 28²e²dx=3e²-3(e-1). = S₁ 2x² e ³ dx = 2²/ #gesidgate enyi lo-te 3 == X YOY'S nll > x = 1 1:2

請問如何得知P甲+P水=P乙

4cm 3cm 7132 20x1 =h= x 0.8 乙 20 h酒 0.8 最低液体交+4cm 若dz=0.8g/cm² Pa=P5 40 Pr+Pax = Ro 水 甲 125= 酒 中相同液体,同一水平、壓力相等 ) .4cm 則.d=0.4 g/cm3 4xd +1.6x1 =4408 de=04 Double

《平面向量》 請問一下要怎麼知道x4 還有x9/2 PQ=1/2PA+1/2PB 把分母消掉不是只需要乘2就好了嗎

範例4 向量的分點公式 2009 在平面上有一 △ABC,P在BC 上,且 BP :PC = 3:2,Q在 AB 上,且AQ:QB = 1:1,R在AC 上,且 AR:RC = 2:1。已知 PQ=(-1,1), PR = (4,10),求: (1) PA = (4, 14) (2) BC = (0)20) 解 A | B 500元 (o 0 PR² = = = PA + = PB² PQ 2 1s C³ 2 限号+垃府 4 (-1,1)=2 PA+ 2 PB₁110 ① 721=365 NOOR SH (5- (4,10)=²+3 ② 0+ @ (-4, 4) + ( 18, 40) = — PA+ (²PB_+2 PC) ď 二元 (14,49 ) = (4,14) @ PB = ² PQ-PA= (-2,2)-(4₁14)= (-+ ₁-1²) BC = - 3² PB = - = (-6 1-12) = (10,20) 身邊商品 Double ammen

請問第二個問題怎麼算？

& STRAND ∞ 範例 2位置對時間函數 8-24+3 金拍屋, = -13 一物體在一直線上運動,其位置與時間函數式爲x=2t--12t+3(x:公尺,t:秒), 若在第3秒的瞬時速度為零,則分別求出計時後10秒內之平均速度與平均速率為何? 18m/5 77/197+3√2 10 解答 V= 4t-12 18-36+3 21 -15 ~/ m S

第二張是解答，問最後一個步驟，怎麼看？

7-72 Reaction of 2,3-dimethyl-1-butene with HBr leads to an alkyl bromide, addin C6H13Br. On treatment of this alkyl bromide with KOH in methanol, form a elimination of HBr occurs and a hydrocarbon that is isomeric with the ber starting alkene is formed. What is the structure of this hydrocarbon, -mote and how do you think it is formed from the alkyl bromide? qedo eidt al .equory Janoitonut Tojem ent to noitqirozeb aus s eaupaib Il'ow aquo Ismoitonul red in related

題目跟解答在講什麼😅

7-65 tert-Butyl esters [RCO₂C(CH3)3] are converted into carboxylic acids (RCO₂H) by reaction with trifluoroacetic acid, a reaction useful in pro- tein synthesis (Section 26-7). Assign E,Z designation to the double bonds of both reactant and product in the following scheme, and explain why there is an apparent change in double-bond stereochemistry: H C-OCH3 C-OCH3 CF3CO2H C=C + H2C=C(CH3)2 H3C C-OC(CH3)3 C-OH 0- H3C

對數問題 第二題n×log1.006=0.4771 解答直接把log1.006當0.0025，請問這要怎麼求？ 第三題也是，解答直接寫出0.0301=log1.072 這要怎麼求？

(99) ( looo (1.02) 46.024.6.05) -> = - 111694 二 -) 年後本利和可達到本金的 2 102. (1-102) 1. 02. (0219) ( Flor = 11.169 -0.02 2.年利率7.2%,以複利計算,每月計息一次, 3倍。 答:16 acloog" =3 a » 3 -) 1.006 = 3 => n 0,471 hinta lag, o6 0,0005 = n. inlog loob = 04 種厂 的官 o 3. 前行政院長提出知識經濟,喊出10年內要讓台灣double (加倍),一般小市民希 6. 放 望第11年開始的薪水加倍。如果每年調薪4%,其中a為整數,欲達成小市民 的希望,那麼a的最小值為 。(參考數值log2=0.3010) 答:8 【91年數乙指考) REDMI NOTE 8 PRO o AI QUAD CAMERA, 的是答 £20 0.0301=10g 1,072? 。 10 MERA) : 2 K