想問這題數學，覺得應該是用算幾不等式列式，可是我列不出來w，想問一下如果要列應該要怎麼列？或是要往哪個方向去想？

A QC BP A ABC, AB = AC=13 BC=10 矩形 PQRS 頂點皆在△ABC的邊上. #P₂ Q₁ TI BCE, TR TS TEAC, AB I 求矩形 PQRS最大面積

請問這題怎麼算🙇‍♀️

8 隨堂練習 - DAB X710 x 76 +8²- 若鈍角三角形的三邊長分別為 6, 8, x, 則實數 x 的範圍為何? TEA2KX2550 或10Lx214 餘弦定理是另一個處理三角形邊與角關係的基本工具,我們來看下面

這題有人會嗎

模考題型 如 [範例] [範例1]已知x、y為正數且 xy=25,且N=5√x+3y為一整數,則N 的最小值可能為? (1)15 (2)16 (3)17 (4)18 (5)19 【龍騰】 S√x + 3 Ty = JsTR+STY 2 Tea dric }

求解

重4 THE TEACHE L-E ()澹母 4.班上同學經過調查,發現有的同學喜歡打籃球。若從喜歡打籃球的同學中任意 選一人,則此人也喜歡打棒球的條件機率為-,則班上喜歡打籃球也喜歡打棒球 3 5 2 的同學占全班同學的比例為 (20分) P(BIA) 星漫 望出賽問齡、书和安

求解第一小題

1.3.5 4. 擲一顆均勻的骰子兩次,設4表示第一次出現奇數點的事件,B表示兩次的點數和為7的 事件,求 8 (1) P (B|A) ° X2 275 42 (2) P(A/B) ·,.,A 3+4 <配合範例2> 加床三且,同時 9 PIBIA) PLAND) P (B) 1x1 (8) 2 **P(A^B) P(A) 17 = 2^ Z 2 7 2 14/ 2 Al 2 FROM

高一組合問題。想問這題的詳解 不了解｛1，2，3，4，5，6｝在這邊是什麼意思（聽不太懂集合與空集合與非空集合的概念）還有元素代表的意涵 書上寫的很抽象不太了解 希望能有白話一點的解釋

((E) *TEA PLUS (1)將{1,2,3,4,5,6}分成2個非空集合,而且每個集合 最多4個元素,則有多少 種方法?(5分 ) (2)將6人分配到A,B兩輛計程車,每車最多載4人,則有多少種分配方式?(5分)

想問第二行後的過程是怎麼算出來的？

範例 (104 設 (1+x)”之展開式中,依升冪排列,第五、六、設(1+x_ 七項之係數成等差數列,求自然數n之值。 21s = Chatea 解: 十一項之一 解: 2 LXp) S: 1h-5)? 42 (2-4)! h! + be (ht)! slut) (+3 TH-4) (0-5) 30 12 (n=4) = 30+ (n-4) (n=5) 77 n-2n +98=0 (hal) (n-14) = n = por 14

問一下第十題的解法

的國又成 (za, tea-leda Me aitard 一 -PoE 2 人員丁別為60分與57分,若 全國文平均67 分,標準差為4分,全班數學平均60 分,標準差為10分,就全班成人 績而言,小華國文的表現較數學好。 Catza 16 ) 3 10. 假設有n個數據成等差數列,且其公差為 若此資料的變異數 2 (2 autung 為 231,求n之值 16 X2 Loud 此一 Al 11. 定義一組資料的第一十分位數為「至少有(含)的資料不大於 組的 na 2 9 w,且至少有(含)的資料不小於W」,試問下列敘述何者為 9 且 12 (etad) 只 10 1 10 真? (1)任一組資料都恰有一個第一十分位數 (2)若將原資料每個 數據分別乘以5,則原資料的第一十分位數乘以5也會是新資料的第

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

請問第二題不應該是.Despite had eaten嗎 求解謝謝～～

2 Despite/In spite of + N/V-ing..., S + V.... 說明 (1) despite/in spite of 為介系詞,後接名詞或動名詞。意為「儘管」雖然。 (2) Despite/In spite of the fact that +S+V, S + V.... Although The +S+V, S + V.... i + Despite the bad weather, they continued with their plan to camp in the mountains. = Although the weather was bad, they continued with their plan to camp in the 儘管天氣很糟,他們繼續依照計畫在山裡露營。 Despite having had a hamburger and a steak, I am still hungry and want to eat some mora = Although I have had a hamburger and a steak, I am still hungry and want to eat some more 雖然已經吃了一個漢堡和一塊牛排,我還是很餓,想要吃更多。 mountain > >