右下角是解答，但我一直算不出來，請幫我解答一下，還有過程

Apply elementary row operations to transform the following matrix first into echelon form and then into reduced echelon form. 64-5 3 -6 3 -7 -7 8-589 3-9 12-96 15 1 0-2 3 0 -24 0 1 -2 2 0 -7 000014 62 62

想請問為什麼第三題要選C

111. 綜合測驗:15% Imagine eating a steak and discovering that the meat is not from an animal. Instead, it was made by scientists! Though this may sound like sci-fi, many companies these days are transforming animal stem cells 1. products that combine to form a type of meat. It's meat," and it's even supported by famous people like Bill Gates. known as The main reason for their support is probably that producing meat in this way holds several advantages 3. with more traditional methods. First, conventional farms or factories don't usually have the livestock's best interests 4. Many animals are poorly treated, and we can prevent them from suffering by to fake meat. Second, the raising of animals for food has caused great harm to the environment. In fact, experts say that emissions could be lowered by up to 96 percent if we stopped eating animals! 5. A(A) into 14 (B) with (C) for (D) at

為什麼這時積分變數t變換為τ時，積分範圍不會改變呢

例題1-7: Given a function f(t) and its Laplace transform F(s), what is the Laplace transform of the delayed version of f(t) by 2>0 units of time, i.e., f(t−2)? You must give a +b(1) proof of your answer. 解 根據拉氏轉換的定義,F(s)=L[f(t)]=ff(t)e="d,所以 【85 中興電機】 [ƒ (1-2)] = f(t−2) e™ dt = f(t-2)e(-) d(-2) -2s 【大專告 201 0 0 C-TER -λs (a)D -ST =eft-)e-d(1-2) = e | f(t)e dt = eF(s) 0

想問11題，如果用featured 不就會變成兩個動詞嗎（held, feature) 可是他也沒有連接詞@@ PS:為什麼不能選C?

第11至15題為題組 In late August, 2015, Taiwan's campus folk song artists brought their 40th anniversary celebration to Singapore with a dazzling show at The Star Theater. The concert, held for the first time outside Taiwan, 11 some of the who's who of Taiwanese Campus Folk Music Li Jianfu, Michelle Pan Yueh-yun, and Shi Hsiao-rong, to name a few. With an audience 12 4,700 fans, it was also the biggest concert of its kind ever staged in Singapore. Due to the overwhelming response of the fans, it was not until close to midnight 13. the concert ended. The so-called campus folk song is a genre of music which 14. in Taiwan from mid 70's when university students fought for a voice and music of their own. This music genre became very popular in mainland China during the 90's with the increased cultural exchanges across the Strait. What the passionate students started has later 15. the dominance of Taiwan in the Mandarin pop music industry and the collective memory of a generation. 11. (A) featuring 12. (A) making up (B) featured (B) involved in (C) which featured (C) composed of (D) which was featured (D) participating in 13. (A) when (B) did (C) since 14. (A) resolved (B) revolved (C) evolved 15. (A) contributed to (B) transformed into (C) intended for (D) that (D) involved (D) devoted to 第16至20題為題組

請問一下 為什麼這句話要加上"are canines" 不是直接用dogs that ... 就好了嗎 加上去是為了強調嗎？還是有其他意思？

15. (A) identity (B) opinion SWA bo129ih sivem letnou (C) salary (D) belief 第16至20題為題組 Inguor 921 (8) (A) Dogs have been considered loyal friends to humans for thousands of years. In addition to the love and affection they offer, they can also provide comfort by being good listeners. Reading therapy dogs are canines that help shy kids who have difficulty reading or talking to people. The dogs are specially trained to remain still and attentive __ 16__ listening to humans. Having the dogs listen closely to their words helps children build confidence and social skills. This is especially important in a time when face-to-face _17_ are rarer as people are now communicating primarily through digital devices. In 2016, several Japanese public libraries began training and using reading therapy dogs. Their services really 18 during COVID-19. The dogs helped children remain calm during the difficult lockdowns of the pandemic.wode 290 sď. In 2021, Taiwan also 19_. For the first time ever, pet dogs were allowed in the Kaohsiung Public Library during a speech by illustrator Lee Chin-lun. The talk was about transforming Taiwan into a society that is more 20 towards animals. The event offered the audience a special experience that connected them with their pets. Some attendees even stated that the warm atmosphere felt like a family reunion.

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. ==

想問此大題的第6小題的用法

acher solved to recall. ton certain. his wife. ted by da the d 五、綜合測驗:10% > 大量的維修 Lesson 3 In 1822-1823, Lin Chi-neng built a beautiful home in Taipei/He named the Lin An Tai, taking "An" from Anxi, his father's hometown, and "Tai" from his company's and it was 2. name. One hundred and fifty-five years later, the Lin family no longer lived in the house, and city planners decided the house should be torn down. considerable repairs. It was a time a A number of scholars wanted to save the house a 6. 3. the city was expanding, 4. being destroyed They started to persuade the authorities not to tear it down. Thanks to their efforts, there was project to relocate* the house. At first, they didn't know they chose a park beside the Keelung River in Zhongshan District. 7., but eventually 8. it took the city twenty-two years to move the house piece by piece and then rebuild it at the new location 9. It was crucial that they exactly the same way. mak After being moved, the home was transformed to the public in 2000. where every piece was so that they could rebuild the house won ji 919rw of aistom nosinsvar ond saundidgil 10. bovora ya a museum which was open Juods adid Oday, it is considered the best-maintained example of a traditional Of D980 19gnor off al 92090 building in Taipei. DINO (99 уBM Jasoo ayos adi no hembral inshoq me aniamen 註:expand 擴張 relocate 搬遷 VEDOI bns 29rvont be awoda VT 2009 ni boutest mosd and af A) 1.(A) residence 2. (A) at risk of 3. (A) where (D) 4. (A) against (5. (A) glimpse (B) mission (C) progress 需要 of (B) in a bad (B) which (B) upon (C) at the cost of f .01 (D) transportation xel (D) in honor of (C) when (D) what (C) under (D) from (B) conclusion (C) replacement (D) campaign (B) led-government (A) (B) where they should put it woH (8) zoq ai i 6. (A) leading-government uaisi tot asw gribi (D) government-leading (C) government-led 7.(A) should they put it where ne wan badi (C) where should they put it AB 8. (A) All in all (D) they should put it where 329) 畢竟 (B) After all iga (C) In the meantimed bus alihs ((D) Once upon a time 9.(A) recorded to give the carefully tak (B) record 2 BA was (C) were recording C10. 10. (A) by ld a dived (B) from (D) have recorded (C) into wen sit bre 162 Ji 15A (C) ced the 80 to the 課 is still displayed today Karl fanx Your (D) with ohioriigil all griauty thudiar book that S+ (should) + AU. bis adj it is to you gone to see od sol Molur *leinoloo sang 1970 loquos

有人會下面這篇閱讀測驗嗎？下面的選擇題該怎麼寫？ "The Path to Acceptance" Once upon a time, there was a young man named John who had a deep affection for a gir... 繼續閱讀

問第二題怎麼算🙏

指數方程式 Share my experience with classmates (ĦI ) a¹(x) = q8(x) (II) Variable transformation : Ex22. 解下列方程式:(1)(3)*+' = 273. 解答 (1)2;(2)1 nir M. (1) 3-4(70²1) 2755 - 2²3² (3^) (3*) ^ +(3*) -3 -36 =(3x+1) TIN 23/12x12/12/2 X 1 X- Ex23.解下列夕卞和 a>0 a#1 IN →f(x) = g(x) N (2)9x+3x+1-18=0. Ex2

第一題

grounderáve had little choice but to go on The COVID-19 pandemic has affected the way we spend our holidays. With bans on overseas travel, travelers who are kept staycations — staying at or close to their homes for vacation. _A5_ a trend, the The fit staycation isn't new. It grew out of the financial crisis of 2008, which left many unable to afford vacations abroad 3. for holidays at home instead. But in 2020, the rising demand for staycations turned out to be a 4. for local economies that suffered deep losses because of COVID-19. In Taiwan, for instance, high-end hotels began attracting guests with discounted packages and themed stays. Taking trips to places close to home isn't the only way to have a staycation. For 5. who are immune to cabin fever, bringing the holiday atmosphere into the home is another solution. In South Korea, some families decided to use money 6. for trips abroad to decorate their homes as their favorite holiday spots, such as a tropical beach. 7. transformed their apartments into indoor campsites by setting up tents, lanterns, 名党t Piz and other camping gear. As home camping became a craze, many camping equipment stores were left without stock for months. (B) grounded (C) grounding (D) grind (D) In B(Vl. (A) ground Anne A) AS FAILURE ÉLPÜREB) With 40 721), de Be 17 May (. {