求解7 8 （用線性逼近

(3) In 1.003 (4) In(0.95) ( (8) cos-10.002 - (7) tan-11.03

可以幫忙看答案是否有誤嗎？謝謝

u. WUP 3. Tablet PCs: Cost, CPU, and Operating System. Refer to Table 1.6. ratio a. What is the average cost for the tablets? 587.9 b. Compare the average cost of tablets with a Windows operating system to the (負銀系) average cost of tablets with an Android operating system. Windows : 133.2, Android: 438.5 c. What percentage of tablets use a CPU manufactured by TI OMAP? 70% d. What percentage of tablets use an Android operating system? 40%

想請問26題如何做，謝謝

- Ym)-1 YmYm-1...7271. = -1 = 20. Show that (1 2) is not a produ 21. (a) If 7. 12....m are transpositions, show that ( (b) Show that o and 0-1 have the same parity for all o in Sn. (c) Show that o and Tot-1 have the same parity for all o and T in Sn: 33. Show that Antun Sn = A, for all n 2 3 (regard Sm C Sn+1 in the usual way). 23. Leto € Sm, o te. If n 23, show that y € Sn exists such that or + yo. (Hint: If ok=1 with k #1, choose m€ {k,1; and take y = (k m).] 24. If o E Sn, show that o2 = e if and only if o is a product of disjoint transpositions. 25. If n23, show that every even permutation in Sn is a product of 3-cycles. 26. Let y be any cycle of length r. If o e Sn, show that oyo-1 is also a cycle of length r. More precisely, if y = (kı k2 okr). kr) show that oyo-1 = (oki ok2 27. (a) Show that (kı kz ... kr) = (ki kr) (kı kr-1)... (kı k2). k2 = (- (b) Show that each o ESn is a product of the transpositions (1 2), (1 3),...,(1 n). (Hint: Each transposition is such a product by (a) and Exercise 26.] (c) Repeat (b) for the transpositions (1 2), (2 3),..., (n-1 n). (Hint: Use (a) and Exercise 26.) (d) If o= (1 2 3 n), show that each element of Sn is a product of the permutations (1 2), o, and 0-1. (Hint: Use (b) and Exercise 26.] 28. Let o = (1 2 3 ... n) be a cycle of length n > 2. (a) If n = 2k, find the factorization of o2 into disjoint cycles. 9 =

請問這三小題要怎麼寫⊙﹏⊙

64. Let f be a function that is differentiable at x = c. noa. Explain why f(x) – f(c) f'(c) = lim X - C - X->C

請問第21跟23題怎麼算？

erlei 35 Range + 10. x - xy + y + 1 = U x 2 3 4 x + 3 3 2 + Finding the Domain and Range of a Function In Exercises 17-24, find the domain and range of the function. Use a graphing utility to verify your results. See Example 2. - . r = bylo No = > - = - X 1 = - X 1 2 - = = -1 – > 18. f(x) = 5x3 + 6x2 – 1 17. f(x) = - x2 – 2x + 3 lxl Domain: (0o,0) 0 (0,00) 19. f(x) = 20. f(x) Ranga : y=-/or Zo: 1 X – 9 (x - 5, x 20 V 21. f(x) = 3x + 2, x < 0 22. f(x) = (3x – 5, x < 0 2 - x, x 20 23. f(x) = X – 2 x2 x + 4 Domain : (-00,oo 1 Domain :(to ,-4) U(-4,00) Rango: (+60, 120 (1,00) = = 24. f(x) x4 V x Range: (-os, as)

請問第53題的反函數為什麼長得一樣？

x - 1) 43. f(x) = x + 12 44. f(x) = x - 3 + + 2) + 4) f(0) = 3 (X-0 (。 c+2) = = = ses 29–34, nd simplify = = Finding an Inverse Function In Exercises 45-56, find the inverse function of f. See Example 7. 45. f(x) = 2x – 3 46. f(x) = 5 – 4x 47. f(x) = 2x + 1 48. f(x) = -6x – 4 49. f(x) = xs 50. f(x) = x3 日 1 2 2 51. f(x) X 52. f(x) = – 0 < < 54. f(x) = x2 – 4, x 2 2 55. f(x) = x2/3, x 20 56. f(x) = x3/5 1 f(x f(x)= = X X - +3 (x) 53. f(x) = 9 – x?, Osxs 3 f"W-14-X?, OSXE3 () = - = - X = - = Determining Whether a Function Is One-to-One In Exercises 57-62, use a graphing utility to graph the function. Then use the Horizontal Line Test to determine whether the function is one-to-one. If it is, find its inve

求解釋~感謝🙏(◍•ᴗ•◍)

Finding a Solution In Exercises 44–47, use the Intermediate Value Theorem and Rolle's Theorem to prove that the equation has exactly one real solution.

求解導函數

T ex (3) em - e- – extex 2

求證明🙏

= () (at)' = In a.at

求解

lim ensinx cos²x Xył x Th