求解🙏

= (S. 40. WORKING MOTHERS The percentage of mothers who work qutside the home and have children younger than 6 years old is approximated by the function sti deri 10205 hindi P(t) = 33.55(t + 5) 0.205 (0 < t < 32) where t is measured in years, with t = O corresponding to at the beginning of 1980. Compute P"(20), and interpret . 19 Source: U.S. Bureau of Labor Statistics. raph fapp your result

大二個經 2.10的第二題求救 想問為什麼衣服不是12而是10

38 數是否會改變?美國為何? 修時間 23 小時,請問其最適課程進修時 92 Xty 2 Y=3" X 5 3 1 (2.10. 大牛是一個日出而作日落而息的佃農,而他靠著辛勤的工作每個月可賺取 的所得為20,000 元,假設他的所得全部用來支付糧食(X)與衣物(Y), 其每單位價格分別為 Fx = 500 與 P = 1000 ,其消費效用函數為 U = U=X+Y4,試問: 660 >Xr 22 3077434 ~ O其最適消費選擇為何? 其 13,5 +1000g exy y x 73 3 } 7 xy $123 574 4400 2 -I 400 = 2400 X + sauny 72 you = 400X+ bong 4 一 1 - y 1 y 10 y + 100 g 4000? > y = x sy >X 9.3 his took R X

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

我的實驗…. 求誤差原因可能是啥🤨

+ Z Ž T & F M 2 22 h 6,5 kcal/meler, 討論亥驗值理論值之間產生誤差的原因。

不知道這個怎麼算🥲

Section 3.5 39. Do the graphs of the functions in Exercises 39-42 have any horizontal tangents in the interval 0 5x = 27? If so, where? If not, why not? Visualize your findings by graphing the functions with a grapher. 39. y = x + sin. ANS: Yes. At x = TT

請問35、36怎麼解，希望有算式✍🏻，感謝！

b. What is the rate of change of the total cost when the level of production is ten surfboards a day? 35. EFFECT OF ADVERTISING ON PROFIT The quarterly profit (in thousands of dollars) of Cunningham Realty is given by x in = 3.5, 3. alt of P(x) = -*** + 7x + 30 = -ered en by time = - vhen 1 P( -x2 + (0 < x < 50) 3 bos where x (in thousands of dollars) is the amount of money Cunningham spends on advertising per quarter. a. Find P'(x). b. What is the rate of change of Cunningham's quarterly profit if the amount it spends on advertising is $10,000/quarter (x = 10) and $30,000/quarter (x = 30)? 36. DEMAND FOR TENTS The demand function for Sportsman 5 X 7 tents is given by p = f(x) = -0.1x2 – x + 40 where p is measured in dollars and x is measured in units of a thousand. a. Find the average rate of change in the unit price of a tent if the quantity demanded is between 5000 and 5050 tents; between 5000 and 5010 tents. b. What is the rate of change of the unit price if the quan- tity demanded is 5000? t (b). = own at its 2. time s the

請問有離散數學高手會這幾題嗎 求救!!!

5. 用數學歸納法證明 1+3+5+...+2n-1=n?, Vn21. 6. 用數學歸納法證明 用 gn>1, 7-1可以被6整除

求這兩題詳解～😢😢

- ons is nilot od plass lo gorol arai (s) 29vom Sion los = 9 ) A 170 kg crate hangs from the end of affope of length L = 12.0 m. You push 人 horizontally on the crate with a varying force É to move it distance d = 3.50 m to L the side (Fig. 7-20). (a) What is the mag- nitude of † when the crate is in this final position? During the crate's displace-lid 250 bisw ment, what are (b) the total work done 32 on it, (c) the work done by the grav- 16 Hoold itational force on the crate, and (d) the kd work done by the pull on the crate from the rope? (e) Knowing that the crate is Figure 7-20 Problem 9. motionless before and after its displace- ment, use the answers to (b), (c), and (d) to find the work force + does on the crate. (f) Why is the work of your force not . ( equal to the product of the horizontal displacement and the answer to (a)? - -- your

請問圖中的時段，計費標準，和費用，分別用哪些公式？

H G 費用 A B C D E | F 1 日期 開始時間結束時間通話時間 時段計費標準(分) 2 2019/12/28 08:15:00 08:35:10 00:20:10 減價 3 2019/12/28 20:15:00 20:31:08 00:16:08 一般 4 2019/12/28 23:58:00 00:44:22 00:46:22 一般 15 2019/12/29 06:10:00 06:10:43 [00:00-43 減價 16 2019/12/30 15:15:00 15:19:30 00:04:30 一般 7 2019/12/30 16:43:00 16:50:22 00:07:22 一般 8 9 開始時間 時段 單價 10 22:00:01-08:59:59 減價 6元 11 09:00:00~22:00:00 一般 14元 12 13 14 115