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數學 高中

所以取有效位數一定要四捨五入嗎? 做例題發現答案都有四捨五入 但題目沒有註明需要四捨五入

Safari 檔案 編輯 顯示方式 瀏覽記錄 書籤 視窗 輔助說明 | 10月16日週六上午10:40 || O highscope.ch.ntu.edu.tw (0) 西 + (485) LOST 35 104 ... ) Y 你也誤會了大霹靂?-科學人雜誌 W 色散光學) - 維基百科,自由的百科全書 以科學記號、首数與尾數「科學 Online G有效位数 - Google 搜尋 人工智慧 化學 物理 數學 生命科學 地球科學 環境能源 科學繪圖 高瞻專區 MI JA 科學記號、首數與尾數 细胞膜運輸物質的方式 Posted on 2010/12/02 in 指數與對數函數,數學 26,081 views 色層分析 三角函數圖形的平移與伸縮 fyLINE + 比爾定律的應用 理想氣體方程式 合 Print a PDF 母體變異數v.s.樣本變異數 科學記號、首數與尾數(Scientific notation, characteristic and mantissa) 國立北門農工職業學校數學科李建宗老師/國立臺灣師範大學數學系洪萬生教授責任編輯 混合物(Mixture) 滲透壓(二) 準確度和精確度 如果一個數寫成 288000000 似乎不怎麼方便,但如果寫成 2.88 x 10 就方便多了,而 2.88 x 105 這種表示方式便稱為科學記號表示法。所謂科學記號表示法,即一個數k可以表示成 k = ax 10%,其中1<a < 10,n 為整數。 混成軌域 總點閱排行 點到 直線的距離公式 當一個數字使用科學記號來紀錄時,通常表示這個數「大約」是多少?而大約就牽涉有一個數表 示成科學記號時,有效位数的取法。如果一個數要取h位有效數字來表示成科學記號,就需要將 k表示成科學記號時,小數點第五位去四捨五入,例如將 0.00028888 表示成3位有效數字的科 學記號表示法即為2.89 x 10-4 。 細胞膜運輸物質的方式 比爾定律與吸收度 混成軌域 腎素-血管收縮素一醛固酮系統 有了科學記號表示法後,就可以將任意一個正實數k寫成k=ax 10",其中1<a < 10,n 為整數。接著對k 取對數,則log k = log a + ",則log a 便稱為 log k 的尾數,而整數n 就 稱為log k 的首數。 準確度和精確度 穿透式電子顯微鏡 例如: 好站鏈接 10月 16 útv JA . Po

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數學 高中

求解第5題

PROPERTIES OF CURVES (Chapter 13) 340 ACTIVITY Click on the icon to run a card game on curve properties. REVIEW SET 13A b y = x - 5x + 2 at (2,0) 1 Find the equation of the tangent to: a y=-222 at the point where x = -1 1-2x at (1, - d f(x) = (3x-1 at the point where 1 = e f(x) = ln(x-2) at the point where x = e. 2 Find the equation of the normal to: a y = 13.1 +4 at (4,4) y = 3e2: a Find a. b at the point where I = 1. 3 At the point where x = 0, the tangent to f(x) = 4x + px + q has equation y = 50-1 Find p and q. 4 Find all points on the curve y = 22 + 3.22 - 10x +3 where the gradient of the tangent is 2 5 The line through A(2, 4) and B(0,8) is a tangent to y= (x + 2)2 6 Find where the tangent to y = 228 +4x – 1 at (1,5) meets the curve again. a Find the equation of the normal to y = e2c at the point where x = a. b Hence find the equation of the normal to y = e21 which passes through the origin. 8 Find the coordinates of P and Q if (PQ) 5 y = at (1,5). va 7 YA is the tangent to P (1,5) 5 y = Q The tangent to y = x+/T = c at * = -3 cuts the axes at points A and B. Determine the area of triangle OAB. Find intervals where f(x) = -23 - 6x2 + 36x - 17 is: a increasing Consider the function f(x) = 2x3 - 3x2 - 360 +7. a Find and classify all stationary points. b decreasing b Find intervals where the function is increasing and decreasing. Describe the behaviour of the function as 200 and as X-→ -0. d Sketch the graph of y=f(x) showing the

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英文 高中

求詳解,感恩

OW dyainst factories that cause pollution. 閱讀測驗3 But the universal of our climate message of crisis wareness hing a fever pitch across the with increasing urgency, a pparent every day. For the Vandana Shiva will never forget a lesson she learned at the age of 13. Her parents insisted that she should wear clothing made only of homespun cotton. One day, Vandana, having returned from a boarding school to her home, demanded a nylon dress, the fashion followed by her rich friends. Her mother agreed. “If that is what you want, of course you shall have it,” she said. “But remember, your nylon dress will help a rich man buy a bigger car. And the cotton that you wear will buy a poor family at least one meal.” Did she buy the nylon dress? Of course not! Maybe this experience led to her resolution to fight for social justice in her later years. Now 60, ever visiting Taiwan in 2010, Vandana's main concern these days is how to preserve Indian traditional crops. This is severely attacked by many global companies. They encourage farmers to grow so-called high-yielding crops; many farmers, therefore, turn to high-tech methods and depend on bioengineered seeds, chemical fertilizers and pesticides. As a result, hundreds of traditional crops are disappearing. Contrary to expectation, high-tech agriculture can not rescue Indians from starvation. Bioengineered seeds are expensive and cannot adapt to local conditions. Hundreds of Indian farmers have committed suicide during the past five he world ironment. ns in 1970. years because of failed harvests. But there is hope. Many farmers are returning to traditional methods promoted by Navdanya, an organization based in New Delhi that Vandana helped found 20 years ago. Navdanya encourages farmers to produce native varieties of crops that can be grown with natural fertilizer and no artificial chemicals. It also helps local farmers form their own self-supporting organization and seed bank. nean? +明一 生能但奇 63

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