求解……照著公式算了好久還是不知道自己在錯在哪裡😭不知道是哪裡算錯

In Exercises 1 and 2, use Newton's method to find the zero(s) of f to four decimal places by solving the equation f(x) = 0. Use the initial estimate(s) xo. 1. f(x) = 2x³ — 15x² + 36x - 20, x₁ = 1 YA 20+ 10+ - 1 -10 1 + 2 3 4 X

求解析謝謝🙏！

+(²x)=-=-=2x-31 | 已知一次函數f(x)滿足f(3)=2,f(3)=7,求f(3")的值。 3x f(x) = ax+b -D f(3²) = 2 = 3² xa+b - 5 = a (3⁰-3²) f/z²)-2-2²²rathe 312 1 1952 tal. ++

求解4.

D U 4. 若a=1, = 2 @+26)=√17,求ā與b的夾角= 解 8 1711-1 a+b)(a +27) 7² +48 +4 1² = 1) it to the 4(2638)

56題~🥲

56. (a) Prove that tang 1-X 1+ X lim 17-1 211, and 2 Z X) 22 lim f(x) = lim f(1/t) 818 t->0+ lim_ f(x) = lim_ f(1/t) 8118 t→0- B assuming that these limits exist. (b) Use part (a) and Exercise 50 to find lim x sin 50+ X

求解 簡單

产分 一選擇題:每題6分,共12分 1. 下列五個函數中有多少個為「指數型成長或衰退」的函數? 3 X 1 0 3 2 10 12 14 f(x) 16 14 12 10 2 1 0 X f(x) 8 #KIN X f(x) (A) 1 個 ||2|3 51901 1359060 | 40 (B) 2 個 0 2104 X f (x) (C) 3 個 1 0 2|3° 0 149 (D) 4 個 the 1 0 X 2 3 f(x) 40 6090 135 ET (E) 5 個 1355

16 thanks 😊

13-16 Find the intervals on which f is concave upward or concave downward, and find the inflection points of f. 13. f(x) = x³ − 3x² − 9x + 4 14. f(x) = 2x³ — 9x² + 12x − 3 15. f(x) = sin²x − cos 2x, 0≤x≤ T 16. f(x) = x √√x − 4 -

請問這一題要怎麼解？

X+6+3)+( 2. 如右圖,P(-2,h)處有一光源(h>0), T:84yy=1,y≥0為半圓 形障礙物,若光線要照到Q(2,0),則h至少需為 P(-2,h) THEO ® Q (-2,0) | (2,0) -X

《空間向量》 請問一下DE沒有和BG歪斜嗎？

力測 驗 * £) =A<p_{NE 直線中,與直線 GB 互為 WE TH AP LOSOS (C) 4 EF THE DH 1 be E A 為A、B、C、D、E, º這個正立方體截出一面 中縣坐間空 出三 B F B E C G C D

第二小題要怎麼算😭

The 6 9. 如圖,已知a> 0, w> 0,函數f(x) = asin(tor-Z)的圖形通過最 高點 P(2, 4) 及最低點 Q(5, -4),且與直線y=-2-2 交於 A, B, C 三點。試求: (1) 數對 (a, a) = (4) (1) T = 2√ 5-7) st5 恐 2h = w --- 60 TV XXRO 2 变)。 (2) TU x=-6²³ 60. ②的長為 (₂) f(x) = 44in (3x - 2/2 ) -252= 45m(x-4) 一樣 想到 你学到 saint > 2 = Sizl us REC N ↑ 10 * P(24) f(r) = asinfore. 181 ( B C Q(5,-4) 3x = -√x + 1²/²2 X = y=-2-2 x---- 動的線圈所產生的電流I(安培) 是時間t(秒) 的正弦函數:

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