正合方程式的問題（工數） 有點毫無頭緒😵‍💫 求解

Section 1.3 Problems 測試是否為正合 In each of Problems 1-5, test the differential equation for exactness. If it is exact in some region R of the plane, find a potential function and a general solution, perhaps implicitly defined, that is valid for that region. If it is not exact on any region, do not attempt a solution. 1. 2y² + yexy + (4xy + xexy + 2y)y' = 0 2. 4xy + 2x + (2x² + 3y²)y' = 0 3. 4xy + 2x²y + (2x² + 3y²)y' = 0 4.2 cos(x+y) - 2x sin(x + y) - 2x sin(x + y)y' = 0 tlsx9 ² +y+ (3y² + x)y' = 0 5.

想問要怎麼判斷這種類型的題目？

試題1 部分答對 得分 0.25/配分1.00 P標示試題 Figure (left) below shows a LC circuit, the top view of the electric and magnetic field inside the capacitor is shown on the right Figure at some time t. Which of the following statements are corrects for the directions of the electric and magnetic fields inside the inductor (top view) and the current at this moment in the circuit? (0) DE A. The magnitude of the current I is increasing at this moment OB. E-field is pointing into page OC. The magnitude of the current I is decreasing at this moment ✓ D. B-field is pointing out of page ✓ E. E-field is counter-clock-wise X OF. The current I is clock-wise OG. E-field is clock-wise ✓H. The current I is counter-clock-wise

大一線性代數 請問這題怎麼解

EX. S = { 1 + 3x+X* ²X², X+2*, -3 +67€ 23, 3+48-28 229 2-48= 3} is a subset of P3, Find a subset of 5 that forms a basis of Spanis).

請問要怎麼把圖一的表格匯入到phpmyadmin裡呢？我結構是設定圖二這樣，也有試過load data infile了是圖三那樣但都錯誤，拜託大家幫我解惑，想了兩天還是沒有頭緒。

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請問要怎麼看圖填出真值表呢 我知道and or not算法 謝謝

9. For the memory shown in Figure 6, and the initial states of all the memory cells are all 0: AA WEI clock D2 D1 DO WE A1 A0Q2 Q1 QO 1 101 0 00 2 001 1 01 3 111 1 10 4 110 lo 01 S 5 111 1 10 B Figure 6

想請問各位大大 我的算法是對的嗎

VER U. 試求圖 EP3.8a 中,立方結晶面的米勒指數。 解 將此平面沿y軸向右平移量單位,如圖 EP3.86 所示,接著把右後下角當成新原 點,新平面和x軸之截距是1個單位長,所以新平面和各軸之截距是(+1, -, c)。 取其倒數後可寫為(1, -, 0),最後取簡單整數比,得到平面米勒指數 (5120)。 z (1/2 - 1 = 3 - 2 子, 新原點 y X 上 Alw (b) (6)

請教我這一題這題有點難

5. O 根據表1~表2, (1)請求出管制圖中的R、又 (2)請求出管制上、下界與中心線 (3) 繪出X管制圖 表1 電腦製造過程之觀測值 組別 數據 1 6 10 2 10 3 7 10 4 8 5 9 10 6 12 10 7 16 10 8 7 10 9 9 10 15 16 10 N00 TTTT 3489111571 6 15 11 5 13 13 10 库116116718181 OO oww ON OL 9 NO Olo 4 12 13 WNI 表2 建立計量值管制圖因子 ** 反三均售重 OS R全拒害 警告三 =美的三表 89 三 B1 B2 B3 B4 d2 d3 D1 D2 D3 D4 #min 1.843 0 3.267 1.128 0.853 0 3.686 3.257 A A1 A2 C2 2.121 3.760 1.880 0.5642 3 1.732 2.394 1.023 0.7236 1.500 1.890 0.729 0.7979 1.342 1.596 0.577 0.8407 1.858 0 2.568 1.693 0.888 0 4.358 2.575 loooo 0 1.808 0 2.266 2.059 0.880 4.698 2.282 O 1.756 2.089 2.326 0.864 4.918 2.115 1.225 1.4100483 0.8586 0.026 1.711 0.030 1.970 2.534 0.848 5.078 0 2.004 7 1.134 1.277 0.419 0.8882 0.105 1.672 0.118 1.882 2.704 0.833 0.205 5.203 0.076 1.924 8 1.061 1.175 0.373 0.9027 0.167 1.638 0.185 1.815 2.847 0.820 0.387 5.307 0.136 1.864 9 1.000 1.094 0.337 0.9139 0.210 1.609 0.239 1.761 2.970 0.808 0.546 5.394 0.184 1.816 10 0.949 1.028 0.308 0.9227 0.262 1.584 0.284 1.716 3.078 0.797 0.687 5.469 0.233 1.777 110.905 0.973 0.285 0.9300 0.299 1.561 0.321 1.679 3.173 0.787 0.8125.534 0.256 1.744 120.866 0.925 0.266 0.9359 0.331 1.5410.3541.645 3.258 0.778 0.924 5.592 0.284 1.716 13 0.832 0.884 0.249 0.9410 0.359 1.523 0.382 1.618 3.336 0.770 1.026 5.646 0.308 1.692 14 0.802 0.848 0.285 0.9453 0.3841.507 0.405 1.594 3.407 0.762 1.121 5.693 0.329 1.671 150.775 0.816 0.223 0.9490 0.406 1492 0.428 1.572 3.472 0.755 1.207 5.737 0.348 1.652 16 0.750 0.788 0.2120.9523 0.4271.478 0.448 1.552 3.532 0.749 1.285 5.779 0.364 1.636 170.728 0.762 0.203 0.9551 0.4451.465 0.465 1.5343.588 0.743 1.359 5.817 0.3791.621 180.707 0.738 0.1940.9576 0.461 1.454 0.4821.5183.640 10.738 1.426 5.854 0.392 1.606 190.688 0.717 0.1870.9599 0.4771.443 0.4971503 2.689 0.733 1.49 5.888 0.404 1.596 20 0.671 0.697 0.1800.9619 0.491 1.433 0.510 1.490 3735 0.729 1548 5.922 0.414 1.586 21 0.655 0.679 0.173 0.9638 0.504 1.424 0.523 1.477 3.778 0.724 1.605 5.950 0.425 1.575 22 0.6400 0.662 0.167 0.9655 0.516 1.415 0.534 1.456 3.819 0.720 1.659 5979 0.434 1.586 23 0.525 0.647 0.162 0.9070 0.527 1.427 0.545 1.455 3.885 0.716 1710 6.006 0.443 1.557 24 0.612 0.632 0.157 0.9584 0.538 1.399 0.5551445 3.895 0.712 17596.031 0.452 1.548 25 0.500 0.9190.153 0.9696 0.548 1.392 0.5651.435 3.931 0.709 1 904 6.058 0.459 1.541

［計算機組織］ 請問這題的 b. 小題 不同的 processor 不是影響 CPI 的值嗎 為什麼可以拿 a. 算出來的 CPI 直接套在這題？

1.7 [15] Compilers can have a profound impact on the performance of an application. Assume that for a program, compiler A results in a dynamic instruction count of 1.0E9 and has an execution time of 1.1 s, while compiler B results in a dynamic instruction count of 1.2E9 and an execution time of 1.5 s. a. Find the average CPI for each program given that the processor has a clock cycle time of 1 ns. CPI = cycles per instruction 1.1 x 10 cycles for 1.0 x 10° instructions => CPL = 1.1 1.5 X 109 cycles for 1.2 x 109 instructions => CPI = 1.25 b. Assume the compiled programs run on two different processors. If the execution times on the two processors are the same, how much faster is the clock of the processor running compiler A's code versus the clock of the processor running compiler B's code? Execution time = CPI x IC x Cycle Time CPIA X ICA X CTP1 = CP1g x IC3 x CT22 CT P:/CTP2 = (CPIE x ICB)/(CPIA X ICA) = (1.25 X 1.2 x 10°)/(1.1. X 1.0 x 10°) = 1.36 Cycle time P1 = 1.36 x Cycle time P2 => P1 is 36% slower than P2

這當中的數量公式怎麼寫？

剪貼簿 PE 学型 A 對齊方式 11 1203 12 1208 13 1218 呂姿瑩 吳志明 林書宏 28,500 30,200 42,500 G14 for D E F G 數量 金額 試以VLOOKUPO查表方式完成下表內容。 INT B TOO 價 B C 21 篇點 1203 2 AGON 耳機 125 22 姓名 呂姿鉴 BA02 CD 280 | 23 基本薪 28,500 4 AOB 隨身碟 1560 | 24 業績獎金 5,498 25 總薪資 6.B01 33,998 電話 1250 6 B04 4980 衣 D0743093-Ch02 習題(2).xlsx"銷售資料」工作表內容,各產品之702 鍵盤 1400 單價如 A1:C8所示: 8 COS 滑鼠 1680 9 A B c 10期 編號 1第然 品名 單價 11 2019/12/29 C02 鍵经 2 A01 耳機 125 耳機 3 A02 CD 12 2019/12/29 A01 280 4 A03 隨身碟 1560 1B 2019/12/29 AOB 隨身碟 5 B01 電話 1250 14 2019/12/29 B04 螢幕 6 B04 螢幕 4980 7 C02 鍵盤 耳機 15 2019/12/30 A01 1400 8 C05 滑鼠 1680 16 2019/12/31 A02 CD 17 2019/12/B1 A0B 隨身碟 試以查表方式查得各筆交易之品名單價,並十算其金图頁: 18 2019/12/81 B01 電話 1 19 A B C D E F 10 日期 編號 品名 單價 數量 20 11 2019/12/29 C02 鍵盤 1400 2 2800 21 12 2019/12/29 A01 耳機 125 1 125 IFE 裏人 地址 平均成績 13 2019/12129 A03 隨身碟 1560 3 4680 就緒 單價 1400 125 1560 4980 125 280 1560 1250 ||| 工讀金 電話費「業績獎金 銷售

尋求好心人能幫我下註解QQ 看了很久還是看不懂

- #include <iostream> using namespace std; int f(int n) { { int t=0; while(n) { t+=n%10; n/=10; } } return t<10 ? t:f(t); } int main() { { int num; while(cin>>num and num) 日 cout<<f(num)<<endl; } return 0;