為什麼可以確定點A,B的對稱中心是C

I. 求三次函數f(x)=x-9x²+17x+4圖形的對稱中心為( a0<d h=-=-=3 B (1,-17)且C點為f(x)的對稱中心,則f(3)= 132 base (30) 5. 日 小 1 PX(-2) 設直線L與三次函數f(x)的圖形交於相異三點A(-1,3),B(5,9),C。若f(x)過點 12+(x)=0(X-13+1(X)-11 20-2P-17:3 11-6-1 + 1² cach 4x + - 18x2 -1 -²-3-2-1 3-910 2 已知不等式ax²-4x+b<0之解為x>=2+3或x-2-73,求不等式

想問要怎麼知道MD必通過H點呢？ （M是我自己設的BC中點！）

Ex15.下圖是一個三角錐,△ABC 與△BCD 均為邊長2的正三角形,AD=3 A 2 設二側面 ABC 與 BCD 所夾的二面角為0,且AH 為底面 BCD 上的高. (1)求0. C (2)求 AH 的長, B (1) 60% (2) 2 CUBASE MING H M-50 √3. D

請問這題的解答第1列算式為何（a-6/2,b-2/2)=(2+1/2,-1+2/2)

在 可能有以 1(不合) 2 k ⇒k=6 =k=-2 李交點 x=-2 X1+1=0 頁碼 185 類題2:視劇音(DT £v£+x$:'3^^\_|\_1=X^(Es-KV (1,2) 小 (2,-1) (-6,-2) 今菱形第四頂點坐標為(a,b),由上圖知 a-6 b-2 2+1-1+2 2 2 9 ⇒此菱形中心為 = ⇒ a=9,6=3 ⇒第四個頂點為(9,3) -3=m| 3 1 - 2 +1 , -1 ":"L₁ : y=x+. 2 2 L平分菱形面積 . 通過菱形中心 1 3 ¹1²2²2 + 2 >m=-1 範例 11 , -b (a,b) 0 2 DIM 頁碼 互 (E)×:L白 L2 故選(D) 介 範例 12 (1) ① 若 設 1

我不會 我錯哪？

例題 12 關鍵題型 絕對值方程式 解方程式 |x+1]+[2x-3]=4,得x= X-(-1) 2/X - ²/2 | 解 十為實數,若不等式|ax+216的售价55 - 1 < x < ²/2 中 2]+2[x-3]≤13的解base

想問最上面那題的“keep”可不可以換成“stay”呢？謝謝🙏

Game 4.1 每天閱讀報紙是讓心智保持活躍和及時掌握時事的好方法。 current events great keep abreast of Reading newspaper every day is a active mind energnic and keep abreast of current events. 4.2 報紙上的填字遊戲和數獨(Sudoku)也是很好的腦力鍛鍊,可以讓人消磨時間。 ( keep the good way to stay your The crossword puzzles and Sudoku are also good mental exercise [ can let people killed time.] for in the newspaper <that allow people to kill time. have Collecting baseball cards 5.1 自從我成為棒球迷,我一直在蒐集棒球卡。 been -ing [Since I became a baseball fan] I continuely collectect

請問這題

(908.67 = 49'? + 5 » 2. (BE ENRIC:X + y + elx + ev + s = 0.3 (1. - 1) (5.2) : (-2,3) = BASE DE DEMAIS DE RED xty 4 87X- 1257 -214 = 0 = (x + 2) + (1 - 2) = 214.4. C 坐標為3.5) (B)C的直徑為25 (C)d < 0 Die > OVE)<0 1+1+d-eff=0 de tf = -2 12514 + + 3+ E0 5412e7faza 1,4d-32=-27 (AUCA god-e=38 23d+2e=16 LLL

高三數學求解，第一題跟第二題都需要

Jus 4. 南一 1設z= Cos 元 365 || 66 67 68 則:(1)z"+z +z + +z 選修 3 2. sro.se 180-boº +isin COM 3 3 (2)滿足z+z+z+z+z+1=0之根,在坐標平面上所表五個點所成五邊形之面積為 (() (1) 26 (1-2%) 1x(+2) (F costsin - Z 760-7750 66 313 02 正想 三一 1.7 1-2) =/ Sin <cos POLYMER IN BASERATI 標準型塑肥據。 me ( 面積 56-se 5x 2 x 1X1 X singo | MB / 一 DG4 4_t5 2 } sro-552 8 13个别 2求下列各複數之主幅角 (1)1+ Cos30° + isin30°,(2) 1+cos200 + isin2009 cos@

想請問這題該怎麼解

log2 2 E. 已知f(x)=x^2-base,且<x<2.2,若當x=a時,f(x)有最小值;當x = m時, f :時6時 f(x)有最大值,則a+n= ( X=25 2126722 ) 5-9

help me please, thanks.

9. College-Educated Workers. Based on data from the U.S. Census Bureau, a Pew Research study showed that the percentage of employed individuals ages 25–29 who are college educated is at an all-time high. The study showed that the percentage of employed individuals aged 25-29 with at least a bachelor's degree in 2016 was 40%. In the year 2000, this percentage was 32%, in 1985 it was 25%, and in 1964 it was only 16% (Pew Research website). a. What is the population being studied in each of the four years in which Pew has data? b. What question was posed to each respondent? c. Do responses to the question provide categorical or quantitative data?

求解

X TX5 4x10 4x10 2 6. 天文學家以織女星的亮度10為標準,被觀察的星星亮度為1,將其星等定義為 log(-)。 人)。試問1等星的亮度是8.5等星的 12 13 14 15 倍。(15%) 2 1. m = - bases