第七題和第九題求解謝謝～～ （算不出來😅，然後第9題的小d是指哪一段😅😅） 答案 7.(a)3cm／(b)4.09×10^-24N 9.(a)1.44cm／ (b)less than

FIGURE 21.13 Problems 5, 6, and 7. 7M In Fig. 21.13, particles 1 and 2 are fixed in place on an x axis, at a separation of L = 12.0 cm. Their charges are q₁ = +e and q2=-27e. Particle 3 with charge q3=+4e is to be placed on the line between particles 1 and 2, so that they produce a net electrostatic force F3, net on it. (a) At what coordinate should particle 3 be placed to minimize the magnitude of that force? (b) What is that minimum magnitude? y 1 L 2 X FIGURE 21.13 Problems 5, 6, and 7. = 9H Figure 21.14 shows an arrangement of four charged par- ticles, with angle 0-30.0° and distance d=1.50 cm. Particle 2 has charge q: +8.00 x 10-19 C; particles 3 and 4 have charges 93-94 -1.60 x 10-19 C. (a) What is distance D between the origin and particle 2 if the net electrostatic force on particle 1 due to the other particles is zero? (b) If particles 3 and 4 were moved closer to the x axis but maintained their symmetry about that axis, would the required value of D be greater than, less than, or the same as in part (a)? sbul & to sigillum in bon 3 mi 5 w 081=0 Im haq to teds at an gnibnoq1109 noi d D 2 4 FIGURE 21.14 Problem 9. naviga Tinoms sized -x Sted) bubai) ab ziedw Som

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.

求解第四題的旋轉體表面積（繞y軸）

revolving the given curve about the indicated Tb. Graph the curve to see what it looks ke. If the surface too. T c. Use your utility's integral evaluator to find t numerically. 1. y = tan x, 0 ≤ x ≤ π/4; x-axis 2. y = 3. xy = 1, 1 ≤ y ≤ 2; x², 0 ≤ x ≤ 2; x-axis y-axis V 4. x = sin y, 0 ≤ y ≤ π; y-axis 5. x1/2 + y1/2 = 3 from (4, 1) to (1, 4); x-axis 6. y + 2√y = x, 1 ≤ y ≤ 2; 7x=siny Ct y-axis

想請問這兩題微積分怎麼解🙏🙏

113年度作業一 隱函數 1. Find the tangent line of the curve (Implicit Differentiation) sin(xy2) + x²+x+1 = 2y2 at y" (2,-1.99883) 2. Given f(x) = = d (Hint: In(u) = dx x² (1-x)³ sec-1(1+x) 1 du u dx , d dx , find f" (2). sec-1 (u) 1 du = |u|√u²-1 dx , |u|> 1 )

請問限制式該如何寫

2024 個體經濟學 0911 作業 請於 0918 上午8點前,在iLearning 上傳你的答案。 Each month a person consumes cosmetics (x1) and food (x2). The prices are p₁ = 100 and P21. Her monthly income is w = 8000. A department store is having a promotion this month. For every $2000 cash payment on cosmetics, the person can get a coupon of $200. So, if a person pays $4000 cash to buy cosmetics, she can get two $200 coupons. But if she pays $3999 cash to buy cosmetics, she gets only one $200 coupon. If she uses $3800 cash and one $200 coupon to buy cosmetics, she can get x₁ = 40 and one $200 coupon. The coupons expires at the end of this month and cannot be sold to others. x₁ and x2 can be any positive real number or 0. 1. Suppose that the coupon can be used on cosmetics only. Draw the person's budget con- straint. 2. Suppose that the coupon can be used on cosmetics or food. Draw the person's budget constraint. 3. Are both budget sets convex?

請問綠色框起來的是什麼意思

example.o A,B: sets, |A|-|B|=n<∞ A function f : A → B is one to one Proof (F) Suppose 39, #az & fears = fiaz) : 充分必要 if and only if it is onto. 7-1-4 3 | { bib = fca, for a EA & 979, 192}|≤n-2 =|f(A)| = h-1 < |B| 7 f is not onto Proof

IFRS9三階段減損相關問題 請問X3年的備抵損失51413如果不用現值反推的方式用損失率計算要怎麼算出來

甲公司於X1年初以$104,452買入面額$100,000,票面利率5% $3 期,由乙公司發行之無擔保公司債,該債券投資之有效利率為4%,並分類為透過其他綜合損益 按公允價值衡量之金融資產。甲公司於X1年底評估該債券自原始認列後信用風險並未顯著增 淇班 加,X2 年底則評估該債券自原始認列後信用風險已顯著增加823 X3 年初乙公司發生重大工安意外,乙公司宣稱此事件將嚴重惡化公司財務,甲公司評估該債 券投資已發生信用減損,估計剩餘存續期間將無法收取任何利息,至X5年底到期時約可收回 检 $60,000。X3 年底乙公司未支付利息,甲公司未改變可回收金額之估計。 EY 回板 X4年底乙公司因新產品開發成功,財務狀況好轉,併支付X3年積欠利息,計$10,000;甲公 司評估乙公司有能力依原始發行條件於X5年支付本息$105,000,致該債券自原始認列後信用風 53751 險並未顯著增加。X5年底乙公司支付本息$105,000。 Z公司公司信之甘他相關資料加下. X1/12/31 X2/12/31 12個月預期違約率 外 X3/12/31 X4/12/31 1% 存續期間之預期違約率2oV4 2% 100% 1% 3% 10% 100% 1% 30% 30% 40% 30% $100,000 $98,000 $62,000 $100,500 | 違約損失率 「公允價值(含應收利息) 「量之金融資產,則有關預期信用減損損失(利益)之認列與衡量均不變,僅須將會計項目 「其他綜合損益一透過其他綜合損益按公允價值衡量之債務工具投資備抵損失」改為「備抵損| 「一按攤銷後成本衡量之金融資產」。) 6 X1年至X5年與該債券投資相關之分錄。(此釋例若將該債券投資分類為按攤銷後成本

答案是b e g i 想知道為什麼 如何判斷的

33. Let f be some function for which you know only that asob (x)\mil ng if 0</x-3|< 1, then |f(x) - 5 <0.1. Which of the following statements are necessarily true? (a) If x - 3|< 1, then f(x) - 5| < 0.1. (b) If /x-2.51 < 0.3, then f(x) - 5| < 0.1. (c) lim f(x) = 5. x 3 - (d) If 0 < x - 3|< 2, then f(x) = 5| < 0.1. - (e) If 0 < x - 3|< 0.5, then f(x) = 5| < 0.1. (f) If 0 < x - 3|<, then [f(x) - 5|<(0.1). (g) If 0 < x - 3|< 1, then f(x) - 5 < 0.2. (h) If 0 < x - 3|< 1, then |f(x) - 4.95| < 0.05. (i) If lim f(x) = L, then 4.9 L≤ 5.1. x→3

想請問9-27和9-28的第二小題🙏

E 9-27 LO (12 Determining the Revaluation Surplus An independent appraiser determines that the fair value of a set of machines in Riga Company is labom 1200 €40,000 at the end of 2022. At that time, the carrying amount of these machines is €20,000 (cost: Sulev sdi gnt €70,000, accumulated depreciation: €50,000), with a useful life of 10 years, and residual value of ob vily €5,000. Shortly, Riga Company decides to apply revaluation to the machine. Help Riga Company to vino ziggs record the revaluation surplus. E 9-28 LO 12 Revaluation of Plant Assets Merody Company acquired equipment on January 1, 2021, for €60,000. This equipment is being depreciated on a straight-line basis over its six-year useful life. There is no residual value at the end of the 6-year period. The appraised value of the equipment approximates the carrying amount at December 31, 2021. On December 31, 2022, the fair value of the equipment is determined to be €50,000. Merody decides to elect to value this class of equipment using revaluation model. Required: 2921019x3 3619 1. Prepare the journal entries for 2021 related to the equipment. 2. Prepare the journal entries for 2022 related to the equipment.

請問這題a為何用DTFT再逆轉換算出來y[n]=0與解答用z轉換結果不同

2.5. A causal linear time-invariant system is described by the difference equation y[n]-5y[n-1]+6y[n = 2] = 2x[n— 1]. (a) Determine the homogeneous response of the system, i.e., the possible outputs if x[n] = 0 for all n. (b) Determine the impulse response of the system. (c) Determine the step response of the system. ==