求解

甘 2. 13 marks] Consider the graph of the function f(x) = 2 sin x , 0 < x < 20 . The graph of f intersects the line y = -1 exactly twice, at point A and point B. This is shown in the following diagram. frequency Consider the graph of g (x) = 2 sin px, x y=-1 B 0 < x < 23, where p > 0. Find the greatest value of p such that the graph of g does not intersect the line y = -1. px 7 = 21 2 sinx=-1 sinx= -/ [Total marks: 3 26. p=3 [ pox to the 3. [8 marks] X=30° hich fl 2.62 +1.

根本看不懂啦＼(￣▽￣;)／

Your report should follow these guidelines, although you may choose how you present it: How to Write a Mathematics Report In writing your report, remember that you are writing up a mathematical story and so, like all good stories, it will need a beginning, a middle and an end. More formally, the main components of this writing style are: Introduction, Formulating the Problem, Solving the problem, Discussion of Results, and Conclusion. We will now consider some of the detail in each of these aspects. Introduction This is the beginning of the story. Give a brief explanation of what the problem is about what the goals of the report are and what will be presented. Assume that your reader does not know what the problem is about or how to solve it. Formulating the problem Translate the situation into a maths problem. Explain how you will begin to solve the problem and break it into simpler stages. Discuss any assumptions made. What quantities are variables and which values are fixed? You may use sub-headings if they assist you. Solving the Problem Show any calculations and mathematical reasoning that you use. (Assume that your reader does not know much maths). Do not show the same types of calculations repetitively. Just give one or two examples of a calculation and then put the rest of the results in a table. Use diagrams or graphs if they assist you. Make general remarks about what you observe in your calculation results and, possibly, why. You may want to criticise your work and go on to improve it in the next section. Explain what you will do next and why. Discussion of Results - Evaluate and Verify Summarise your results if necessary and refer to your mathematical reasoning. Justify procedures used. Interpret your results. First, are they reasonable or does something not look right and need further investigation or checking? Is there a decision to be made? Here is where you should present the decision-making process. Evaluate the strengths and limitations of your solutions. Conclusion Summarise your findings. Refer to the problem outlined in the introduction. Make sure that you answer the question that was asked. Make recommendations. No new material should be presented here.

不會計算

高一數學 LZ 扎馬步 8=4 (如 M=156 2. 甲、乙兩人與其他八人的平均身高為156 公分,標準差為4公分。若其他八人的身高分別為 150,152,153,154,156,157,160,161 公分,已知甲比乙高,則甲的身高為多少公分?(B) to tl + 4 +5 【台中一中) 9 165 +45 + with tot 181842 - 4 -印= t2 = 4400 to - 2 10.3 16 1,162 (2 2074 PVC 使用Far 答案:1.55 分與62 分 2.163 【數據(非線性)調整的影響) 1.某校高一第一次段考數學成績不太理想,多數同學成績偏低;考慮到可能是同學們適應不良所致, 數學老師決定將每人的原始成績取平方根後再乘以10 作為正式紀錄的成績。今有100 位同學, 發現調整後的成績其平均為65 分,標準差為15 分;試求這100 位同學在未調整前的平均成績[ t (94年學測】 Y = Fx tlo n-loo My abs Oy = 15 1100 = 100 (1 8² +65) Gyaloox ex y zlook! 1 X 100) = 106 (15²4653 ( look, tloog 100 (X, that 4 + Xeoo nx A:

請問這題怎麼寫？ 為什麼拆成1+2+3+...跟2+3+... 根號呢？ 謝謝

dan 之值。 = a = 41x2 + (2x3 +..+ n(n+1) = lim n->00 an znxfxz ? Aanz zn. jan (anti) >錯! n. fixż z ans nrncntl) 1+ 2+ 3+1 & ans 2+3+4+with nintil < sans hint3) z z enlant} zhzhi) ) < € Azn & z z 類題:

想問12題，答案是let但三另外三個不也是使役動嗎

(A) K1JS (B) are killing (C) are killed (D have kiuled ( 入 Michael Phelps, as __,fulfilled his goal of winning eigmt gold medqals In the2008 Olympics. (A) had been expected (B) has been expected (C) has expected (D) had expected ( 》五 Tom was very 11 a week ago, but now he healthy. We are amazed by his qulck recovery. 3 〔【96 學測】 Jikes (B) 吧 like (C) looks looks after 於 了 teach me what you have in your heart that you So generous. A) makes (B) lets (CKenables (D) has 【97 學測】 3 財! hope 1hat there no war in the world and that all people live in peace and harmony With each other. | 【98% 學測】 (B B) willl be (C) has (D) have Still. and horse-drawn 【99 學測】 (A) are ) 4#_ n Bekojl ( 衣索比亞的小鎮), time almost carts outnumber motor Vehicles. 人 和人 抽信全 人和) ee (CO S1tS

求

五、綜合測驗:10% When we think of sleepi Jaying our heads ori big ftuffy pillows and lying under niee warm bl ,SjJeep in very different places. Sea otters, for instan' 2. don't drown. When giraffes get their forty Winks, tbey are water and _2. use fheir hips as a pillow. And some creatures, like the Alpine swWift, can even doze 0 | while in 各ght! These every year On these extremely 1ong 和ights, they stay in the Sky _5 , We prob: migratory birds trayel thousand ably picture a nice comtortable bed. We imagine ankets. Most antmals, ce, sleep on their backs in the | 蟬 人G | js of kilometers between continents Weeks and even months at a time. One Swiss study in 2013 showed that Alpine sSWitts remain in the air for even 1onger than we imagined. Special sensors w be measured at all timmes. The research team found that tte Jocafion and speed _6. swifts could cover up to 10,000 km and go as long as 200 days 和hatAlpine swWifts don't sleep atall during these flights Tecently. 9. Some 8 many ag nakes fhem some Of the coolest sleepers Juffier一piows Or clouds? ( ) 1L.(A) therefore ( ) 2.(A) otherwise )訪3(0a9l ) 4.(A)amazZe ) 5.(A) Within 0 must ree that they are capable oF getting 所 least some Shut- ere_ attached to SiX birds so that their Vanding! eye up in the Sky. This 10._. It also makes you Wonder which 3 (B) however (0C) fortunately (D) miraculousiy (B) thus (C) theretore (D)yet (B) sure (C) about (D) goimg (B) amazes (C) amazg (D) amazew (B) during (C) for (D) on (B) might (C) should (D)wil

求解。句子我不太會(;´༎ຶД༎ຶ`)

(和 上Lesson 3 -、詞類變化:10% 一六弛 The children stared at the mag gieian in took arabbit from his hat suddenly. 影 (amaziangy When he The wonderful scene i 和 scenery in the countryside G y 5 Ympressivey S me so much thatI will never forget it 3. It takes some 一(seientist knowledge and crYeattviy to Invent something like an electronie pet 4. Wendy likes to go to the ice cream store, for there are (variety) flavors of ice cream to choose from.- 1 5. The (average) age of the workers in this company is about 2 thirty-five, so you are probably the youngestone here. 句型練習 :20% +fYV+wh- (+ S$)+V”句型來改寫以下句衛。 (3) 9 2 Why did Rachel leave Eric Without saying a Word? Eric was Wondering, (3%9) 今 When will Peter's birthday party be held? His friends are not sure (40%) 3 -光2 ) 用“im order (mo0 6 V句型來合併以人二 ]. Tom works day and night. He can support his family. (3%) 當 0, 2. Jane spends some time exercising. She Wants to Stay fit. (3%6) the tratn. (406) tim1ss 3. You had better get Out ofthe house early. You Wontim 信 翻譯:15% (1至3一格1分)4至5是人多 dam 討厭某些蔬菜 ; 例如, 1 _gXQp he hates lettt 9 Y dam hates certaln vegetables; 0

請問第4題該怎麼算？

呈 宮 < 2 交 Ki sald the plzza in this restaurant Was the best he had ever had hen (B) X (0C) place (D) what 2006 work miracles, and one high school teacher did something to prove this point.”Wh teacher, she was having a hard time _27. her students. Then she came up With an re about his or her classmates. “When Students 4. 擲甲、乙兩個骰子, 令點數和為的事件為 4, 甲骰子點數為1的事件為2 看 獨立, 則= : 5. 袋中有3個白色球和。 Ariaom硬間了品

想問第8格的選項為什麼選D 感謝~~

AV hthe stateroom9, observing their mona was given the opportunity to troop throug & pp 和 gh the passageWw3y” of Versaill croWwds moving throu 二人 he time. With halls 琢 Vendorsa dtolive mp to the name 0 populace at home. Due to the conStant Streams 0f the royal palace was an unsanitaTy residence at t townspeople and filth piling up in the hallways, Versailles falle symbol.9f Stylish Jiving. D ff(A7Spentm 散在 (B) catered to 避43 痊 (C) ended up (D went Into 人 eres 5了(Ahave no choice but to +vke (B) have difficulty +My Re C) cannot help but sw ct AU AV (D) make itarule to ( ) 5用AA wore (B) put on C) dressing up (D dressed im 軍 ) 2 (A) Asaresllt (B) In an instant (CO For example (D Furthermore t 讓 艇(A) swarmed wifh 一(B)to be crowded With (were ffJJed wi了h (Dbursting With 二文意選填 0 Thousands Of years ago, human beings lived in dark, _ 紀, GaVNeS. JOoday, Some beott 下 cave SOmeday? A cave may not be everyone'”s idea ofa dream home, but it can_ Offer an ]2 0負er types 0f housing. Cave homes can also help Solve some Qf today2S 3 DTOUDlel

各位大大，求解打星號的題目，不好意思😅😅問題有點多

2 av2x2-24 2 周 方程式6 4 -3.2+12 0之解放 朋才g 完機構發現碘131外洩, 且發現時碘131的數量為12單位 .已知碘131的生劑期為5天,且 外洩時間為64天前, 求原先外洩的碘131有多少單倫 3072單位 GO