想請問這一題要怎麼算 謝謝😊

售族自然 Exercise 1.冰的莫耳熔化熱為 6.07kJ,水的莫耳汽化熱為 40.6kJ,求 25°C 時水的莫耳汽化熱為? kJ/冰、水、水蒸氣的比熱分別為2.06.J / g°C、4.18Jg°C、1.86J | g°C) 43.73kJ

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

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

英文 想請問17題，複合代名詞究竟該如何判斷意思及該選的選項呢？謝謝🙏

:20.透透組 While once known for its people's good looks and slim body figures, Brazil is now confronting surging obesity rates. Almost one in four Brazilian adults is obese, a doubled rate in the past 20 years. It has led to a movement to protect overweight people 16. being discriminated. This issue is also at the center of the heated debates on one of the Brazil's most popular TV programs. This country, in media, has been featuring 17. women in ads and on catwalks. In addition to the fashion industry, other organizations and businesses are taking action. Hospitals are purchasing larger beds and MRI machines. Movie theaters are offering wider seats. At school, a day is 18. to promote the rights of overweight 這一天被預留下来 people. Laws are changing as well. Across the country, ese people are now 19. seats on public transportation and priority at certain places like banks. Besides, a comedian was fined $1,000 for making jokes about a dancer's weight. Though obese people are being treated more and more kindly, some experts urge the government to address the issues triggered by obesity from the perspective of health. 20. so have related health problems, such as diabetes, stroke, and sleep apnea. Luckily, Brazilian governments have launched campaigns encouraging a healthier diet, financed exercise spaces in Brazilian towns, and promoted more nutritious meals in school cafeterias. 16. (A) not (A) full-figuring 18. (A) lining up 19. (A) deprived of BRO CR (B) for (B) full-figured (B) kicked off B) characteristic of (C) with adi. slim-figuring (C) set aside entitled to D) from (D) slim-figured (D) following suit BIF (D) withdrawn from

想請問這題為什麼是D

·等,可被保 -表原因的連 表主動), EXERCISES 實地演練 CLAS 會看要源碼注的 【國王廟動荐:主代表D D. 1. However, many people, either refusing to accept the new date or not having heard about (A) continue to celebrate New Year's Day on April 1.預見美 (B) continuing (C) to continue (D) continued 【108學測】

想問第3格要填什麼？

II. 綜合測驗:15% The Marshmallow Challenge is a popular team-building exercise. In this challenge, groups must work together to build the tallest structure that can support the weight of one marshmallow. __ 1.__ only dry spaghetti, tape, string, a marshmallow, and 18 minutes to finish the challenge, the teams must work quickly. The Marshmallow Challenge has been 2. conducted with architects, lawyers, managers, and children. In one study, the group built the highest structure were architects. However, children performed better than the other adult teams. 3. had been Why did children do so well? First, they worked quickly with given to them. The adults spent more time planning, so they had less time to adjust their designs. Second, children collaborated to understand 4. to build the tallest structure. Adults wasted time 5. a group leader. In order to solve problems, we must collaborate and try new ideas. The Marshmallow Challenge helps people do that.

51題，解答九分之一那邊，為何是cot3x的三次方而不是一次方，為何是九分之一不是三分之一？

Finding an Indefinite Integral In Exercises 49–58, find the indefinite integral. Use a computer algebra system to confirm your result. 49. cot 2x dx 50. tan Soor foset X X sec4 4 4 dx 51. csc4 3x dx 52. cores X X cot? csc4 – dx 2 2

求救第55題 完全看不懂他要我幹嘛

Year slenue Req) = 1932 1958 +1000 q R 9)=-1000q =74 1963 1968 COM If the price in dollars of a stereo system is given by 1000 p(q) + 1000, 1000 ² q where q represents the demand for the product, find the mar- ginal revenue when the demand is 10. 54. Profit Suppose that for the situation in Exercise 53 the cost in dollars of producing a stereo systems is given by C(q) = 0.2q2 + 69 + 50. Find the marginal profit when the demand is 10. 59. Marginal Product of Labor The output y of a manufacturing y process is a function of the size of the labor force n using the function 1990 +1000 1971 1974 = 990 197 197 19 19 1 y = kVn. The marginal product of labor, defined as dy/dn, measures the rate that output increases with the size of the labor force, and is a measure of labor productivity. (a) Show that (c) Using the a cubic f respond the rate and 200 (d) Discus descri part ( the y (e) Exp data calc ful x C(x) = 58. Money 1955-7 dy k dn an (b) How can you tell from your answer to part (a) that as the size of the labor force increases, the marginal product of labor gets smaller? This is a phenomenon known as the law of diminishing returns, discussed more in the next chapter. 56. Profit An analyst has found that a company's costs and rev- enues in dollars for a product are given by x2 C and R(x) 2x 2 5000' respectively, where x is the number of items produced. (a) Find the marginal cost function. (b) Find the marginal revenue function. (c) Using the fact that profit is the difference between revenue and costs, find the marginal profit function. (d) What value of x makes the marginal profit equal O? (e) Find the profit when the marginal profit is 0. (As we shall see in the next chapter, this process is used to find marimum profit.) A wher in bi find year (a) (C) (e) nad since

51最後怎麼算？sec c算出來後 我就看不懂要怎麼弄出c的值了

Value Using the Mean Integrals In Exercises 47-52, find the value(s) of c guaranteed by the Mean Value Theorem for Integrals for the function over the given interval. 47. f(x) = x3, [0, 3] [3 19 [0, 6] 4' = 48. f(x) = (x, [4,9] 50. f(x) = [1, 3] , 3] 9 - x2 49. y = , r3 - T [15 TT = 51. f(x) = 2 sec? x, 52. f(x) = cos x, 3' 3 4² 4

65.66怎麼證明，real solution是什麼？是真正的解法？

Finding a Solution In Exercises 65–68, use the Intermediate Value Theorem and Rolle's Theorem to prove that the equation has exactly one real solution. 65. x5 + x3 + x + 1 = 0 66. 2x5 + 7x – 1 = 0 -