請問為什麼等號會成立於a <= x <= b

if a<b, 1x-a|+|x-b13 (α-bl 成立於a≤x≤b

求講解 答案是（9，1）

Js sin 二. 設 Maye 30/ 函數y = 8sin² x- Fan(-8) 210. sin x-t mth 5元 設0≤a<2z,>0,若 2√3 cosx+ > >0·2√3 cos(x+7)- 81-8243 8(七一七七)+3+4=81 8 sin x + 3 有最大值M 和最小值m,試求數對(M)=1 1845 •4cosx = resin(x-a),則(r,a)= 8(七)+9 17 2 42+5 11815

想請問第一張照片，為什麼答案會是C 第二、三張照片的問題都在上面！ 希望有人能幫我解答🥲 謝謝！！！🙇‍♀️🙇‍♀️🙇‍♀️

6 5. 設數線上三個相異實數a,b,c對應的點分別為A,B,C,且a=-b- --c,則下列敘述: (甲)B介於A,C之間;(乙)CB右邊;(丙)A,B,C必有一點在原點右邊:(丁)BC=6AB8. 有幾個正確?(單選) (A) 0 (B) 1 (C) 2 C 。 (D)3 (E)4 a = fb- tc&b= ga+ πc b = ha+hic 6 <配合範例4>

求這三題的過程 謝謝！

L000 In exercises 37-39, determine values of a and b that make the given function continuous. zeros at f(x) #C Some nu Theorer 2 sin x if x < 0 unction continu- X nction should be 37. f(x)= a if x=0 bcosx if x>0 52. For fo Does t

12.13.16都不懂

力 NC F2 FO FO FD FO FIO 814 串 - %业 B 車 7 B Wi E« RI 山 DH p e 山坤 灭口 S D支 G HY 火土 C VT B N MU 月馬 B Alt I 2. 課後作業 因式分解 13=4x-1-4 abx²+(a²-b²)x-ab x(x-1)+32(x-x²)+60 All 4. 5 6(x+y)²-5(x²-y²)-(x-y ©3x2+5x-2y²+x+ 9y-4 x²(y-z)+y^(-x) 6. x*+5xy²+9y' hint = [(x²)² + 6x²y² + (3y²)³] - (19)² 7. 8.) x−4x-x2+4 9. a'b³ +a²b²-2 hint : [(ab)' −1]+[(ab)² −1] - -Backspace LEnter Shift Ciri Delete [(ax-b)(bx+a)] [(x+5)(x+1)(x-2)(x-6)] [2y(7x+5y)] [(3xy+4)(x+2y-1)] [(x-y)(xy-xz-yz)] [(x²+xy+3y²)(x² - xy +3y²)] [x(x+y)(x―y)(x² + xy + y²)(x²-xy+ y²)] [(x+2)(x-2)(x-1)('+x+1)] [(ab-1)(a²b+2ab+2)] [(x-y)(x+y+1)(x+y-121 (10) x(x²-1)-y(y²-1)+xy(x− y) (11) x' + 64 解二次方程式 [(x+4x+8)((x-4x+8)) 解方程式x²(x+5)+10(x²+5x+1)+14=0。hint: 令x(x+5) = 1 [-1,-2,-3, 13. 解方程式4x²-13x²+1=0 3± 17 4 14. 解方程式(x-1)(x3)(x+2)(x+4)+24=0 [-3,2 或 二十 hint: [(x-1)(x+2)][(x3)(x+4)]+24=0>(x²+x-2)(x²+x-12)+24=0 15. 解方程式 6x²+5x²-38x²+5x+6=0。hint: 同除以x² 16. 方程式x²-5x+2vx²-5x+3=12的實根為何? hint: 令 √x²−5x+3= t [-3,一 可 OPPO Reno5 Z 31

想請問這兩題，謝謝🙇‍♀️

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

為什麼根號3a可以等於6？兩平面的距離不是那條線要同時垂直兩平面嗎？

6 坐標空間中,考慮有一個頂點在平面z=0上,且有另一個頂點在平面z=6上的 -81=9 正立方體。則滿足前述條件的正立方體之邊長最小可能值為2万 最簡根式) ㄜˊ z=6. Z=0 。(化成 (Xuy,b) if正立方体边長為の【108學測】 Y, 6) a Ha(0,0,0) 2頂點最遠距離為Jia Joa=b+9= 653 = 253

想請問一下，這題要如何解，有聽老師說過但忘記了😓

平日速, 茶粉 下列選項中,哪些圖形的相關係數與右圖的相關係數相等?(8分) (A) DE OE (B) as SS (C) 4 5 TEA 5 5 4 1321 3 2 . 1 54321 3 ° 1 -x 012345 (台8) 個 -x 54321 51 -x (D) 5 3 54321 0 12345 y . -X (E) 0 12345 y 3 54321 e 0 12345 -x 0 12345 -X (C) 0 12345 X If.o 零 (1.3)

這是怎麼得到21.8的？我自己去查了反三角函數感覺我還缺一些前置基礎，所以希望可以有計算過程我之後自己研究

27 The diagram shows triangle ABP inside the regular hexagon ABCDEF D 860² - 4 2 5 AB = 5 cm Work out the size of angle PAF Give your answer correct to 3 significant figures. BP = 2 cm E Angle ABP = 90° (6-2)-180 6/92= 120 =720 F Diagram NOT accurately drawn X+3 6+4 = Do x+y=90 442=120 *X-2=-

這題為什麼這樣算？🙏🏻

1 如圖,有一邊長為6的正立方體,今置頂點 4 於空間坐標系 中之原點(0,0,0),置頂點B於正z軸上,則頂點C之z坐標 為何? 45 SCHEX-0 【自命題】 if c (a,b,c) AC = 6√₂ 【中文! BC = b =XS-8+XP+2 407263(2-) q++b*+C*=72-① {a q++b++(C-653)*=36-② → C = 1 / 2 = 455 7²² ₁1 1² + (21-12-1 B AZĀ C (0,0,0)