請問這題怎麼算呢？謝謝~

x-k 3 假設f(x)=|log. 1,其中K為實數。 若坐標平面上P、Q兩點的坐標分別為(1, f(1))與(3,f(3)), 則當k為 蓉 -2 時,直線 PQ 的斜率會最大。

請問這題怎麼算？我只會到這一步

對數不等式 log2-x(9-8x)≥log2-x(7x-5),求實數x的範圍? 14 5 9 答 7 <x< 或1<x<- 15 8 2-XX< 2 x 1 ① 自然範圍 2-X70 A 9-8× 707 x < 2 7x-570 → x 75/7

想問這題🙏🙏🙏

10. 已知實數a> 1,正方形 ABCD 的面積為36,其中AB與x軸平行, 且A,B,C分別為函數y = logax,y=2logax,y = 3logax圖形上的點,試求 a =

想問第十題的選項2是黃色的紙那樣算嗎？

* 35 數學B考科 請記得在答題卷簽名欄位以正楷簽全名 z 10.設P(a,b)為兩函數y=logx和y=sinx 在 為實數,請選出正確的選項。 (10<a+b<3<a<l, o<b<l (2)(bar)為函數y= (3) aπ 振=1 第 4 共7 頁 頁頁 [02]內之交點,其中為圓周率,a、b (2)b=logan P (ar, b) 0.301 0.301 10 圖形上一點 -b 為函數y=log x 圖形上一點 2 元 3,14 y=10gx For (4)(z,b)為函數y=sinx以原點為中心水平伸縮a倍後圖形上一點 (5)(an,b)為函數y=sinx 向左平移單位後圖形上一點 (11. 筊是利用兩個半月形的木頭筊杯,透過將筊杯 預測事情。根據筊杯的正反可分成以下三種狀況 二種為兩正面,又名「笑杯」、第三種為兩反面 出聖杯表「成功」,無杯表「失敗」就不再擲 或「失敗」才停止。若每一個筊杯正、反面出現 "ar = (1/1) b logar = log + = b to 頁

請問這題怎麼算

34. 設實數a1,a2,...,a,是公差為2的等差數列,其中a≠0且ag>0。 若 log2 as, log2 b, loga,三數依序也成等差數列,其中b為ag, as, 96, a,ag 其中一數, 則ag=. 。(化為最簡分數)

為什麼[A(org)]=n[An(org)]成立 (第三張圖equation 7.9) 感謝

Experiment 7 Experiment 7 The partition of Organic acid between Water and Organic solvent Objectives Understand the partition of a solute between two immiscible solvents. Introduction A chemical analysis that is performed primarily with the aid of volumetric glassware (e.g., pipets, burets, volumetric flasks) is called a volumetric analysis. For a volumetric analysis procedure, a known quantity or a carefully measured amount of one substance reacts with a to-be-determined amount of another substance with the reaction occurring in aqueous solution. The volumes of all solutions are carefully measured with volumetric glassware. The known amount of the substance for an analysis is generally measured and available in two ways: 1. As a primary standard: An accurate mass (and thus, moles) of a solid substance is measured on a balance, dissolved in water, and then reacted with the substance being analyzed. 2. As a standard solution: A measured number of moles of substance is present in a measured volume of solution - a solution of known concentration, generally expressed as the molar concentration (or molarity) of the substance. A measured volume of the standard solution then reacts with the substance being analyzed. The reaction of the known substance with the substance to be analyzed, occurring in aqueous solution, is generally conducted by a titration procedure. The titration procedure required a buret to dispense a liquid, called the titrant, into a flask containing the analyte. A reaction is complete when stoichiometric amounts of the reacting substances are combined. In a titration this is the stoichiometric point. In this experiment the stoichiometric point for the acid-base titration is detected using a phenolphthalein indicator. Phenolphthalein is colorless in an acidic solution but pink in a basic solution. The point in the titration at which the phenolphthalein changes color is called the endpoint of the indicator. Indicators are selected so that the stoichiometric point in the titration coincides (at approximately the same pH) with the endpoint of the indicator.

求解這題感謝

13. 小黃準備向銀行貸款100萬元當做創業基金,其年利率為8%,每年複利一次, 則至少 年後(取整數年數),一次還清貸款的本利和會超過200萬元。 (已知log2≈0.3010,log3≈0.4771)

想問為什麼 第一張不用= 和 第二張要=🙇🏻‍♀️🙇🏻‍♀️

2. 2011年,德國爆發大腸桿菌疫情,導致30餘人喪生。已知大腸桿菌在體外培養每30分 鐘分裂一次,1隻分裂為2隻。試問: (1)若一開始大腸桿菌數量為1隻,則4小時後大腸桿菌數量為多少隻? 8.4(2) 大約多少小時後,大腸桿菌數量會達到10隻?(無條件進位至小數點後第1位) 1) 1×2 = (256) # 0.602x745 2X 1x27410 2x4092745 X78.305 3 8.4 x=8.9 #

請教這題🙏 這個圖是怎麼畫的？

答 範例 x 試利用圖形說明方程式 = =|logzx|有多少個 2 實根。 解:/ || 類題 xgol 有了交点 力 Y = Z 14 Jego 21 出 <1 (0,1 3

想問第一題和第五題 謝謝

2. 試解下列方程式及不等式: (1)10-2x5-3×2*+6=0 x x= Tor logs? 2014. (2) log, (3*+27) ==+1+log34x= 2 +2<0:-/<x<5. (3)()2-5-65-()*+2<0 (4) log, (x-1) <1+ log,(x+2): *kx<1. (5) (log 4x)(log 8x) ≤12(log 2)²: 111