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數學 高中

求解1. b

B 3 Investigation 1 When a curve is increasing, we say that it has a positive gradient, and when it is decreasing we say that it has a negative gradient. Consider the curve y=xº shown in the diagram. 1 a Give the range of x values for which the gradient of the curve is i negative I ii positive iii equal to zero. b At which point is the gradient of the curve greater. A or B? The tangent to a curve at a point is the straight line that just touches but does not cross the curve at that point. N 1 y=p 1 2. 3 2 2 a On your GDC or other software, plot the curve y=x' and draw the tangent at the point (1, 1), as shown in the second diagram. b Zoom in to the point (1, 1). Factual What do you notice about the gradient of the tangent and the gradient of the curve at the point of contact? c Use your GDC or online software to draw tangents to y=x' at the points listed below and in each case write down the gradient of the tangent. 0 -1 1 2 X -1 0 2 2. 3 Gradient of tangent at x 2 d Conjecture a function for the gradient of y = x2 at the point on the curve with coordinates (x,x).

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英文 高中

求解45題 為什麼是b

Pet Insurance 10 Pet Shop FOOD & MEDICINE 43 - 46 題為題組 killed intentionally or unintentionally- C2 As humans make the wildlife habitats less and less remote, the chances of wildlife being are growing higher and higher. Among the causes of their unexpected deaths, roadkill ranks at the top. In Taiwan, the revealed statistics are rather shocking. According to a five-year survey by the Taiwan Roadkill Observation Network (TaiRoN), approximately five million animals become roadkill each year, involving 550 different species. Between 2012 and 2017, it was found that 54 leopard cats, 257 palm civets, and thousands of cats, dogs, and reptiles perished under the rolling wheels of the motor vehicles. TaiRON originated from a Facebook group created by concerned citizens in August, 2011. The group members come from a variety of locations and academic backgrounds rather than from any particular group or association. It is not an intentionally planned, research-oriented citizen science project. Rather, it is gradually established through discussions and consensus among members. There are four tenets guiding this organization: roadkill mitigation, citizen science, environmental education and life cherish. To encourage people’s participation in the program, TaiRON specifies four easy steps as follows: 1 Turn on GPS on your phone and take sharp photos when you encounter dead (wild) animals in the field. boll N ebonobo 、 20 Upload the photos and information (dates, latitude and longitude etc.) to the database and Facebook by APP. 100 robilo 3 Collect the complete carcass carefully with 2 layer zipper bag, label with information, and then put it into solid cardboard boxes or Styrofoam. 4 Use 7-ELEVEN “Frozen Shipping, Home-Delivery" and "C.O.D. (Cash on Delivery)" to send the package to Endemic Species Research Institute. One animal of TaiRON’s survey is the leopard cat. As Taiwan's only surviving wild cat, this feline species faces death threats from habitat loss, pesticides and car traffic, the last of which is the most serious one. Leopard cats are often found struck and dead on the roadside. By publishing roadkill statistics on leopard cats, TaiRON has championed the protection of this endangered species. Due to their unyielding efforts, there has been a significant drop in leopard cat deaths. toitained and odd or how Torloni 第四回 g 41

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英文 高中

請問為什麼第六題的A不行

(C) Unioitunut UUS UT Spen J. Nonetheless C 4.(A) unless 15. (A) how (B) Therefore (B) despite (B) if Threven (D) since (D) which (C) once (C) that (F contrar 三、篇章 Ecor are 6. some in 7. on there, a took 8. finar Her she D5. (A) Shoplifting is a serious problem for both stores and honest shoppers. Because of shoplifting, stores in the U.S. lose more than one and a half billion dollars a year. These costs the shoppers. Shoppers must pay higher prices for the things they purchase. What can be done about shoplifting? Several cities are taking steps to shoplifting. For example, Kansas City, Missouri has initiated a program for shoplifters. The school is for people who have been charged shoplifters for the first time. These people attend a one-day class on how to break the habit of shoplifting, instead of going to jail . When they finish the class, the charges against them are dropped. The shoplifters in this class have given some facts about themselves. Most of the shoplifters had regular jobs. Some even earned a lot of money. The school for shoplifters seems to be successful. the first 400 people who took the class, only one was caught shoplifting a second time. Apak! CA 6. (A) returned (B) engaged in (C) passed on to (D) caused by (B) cut down (C) put down (D) lie down (B) for (C) to V 9. (A) promising (B) encouraging (C) interacting (D) surprising 10. (A) Because of (B) In spite of 00 (C) Out of (D) Speaking of 9. ar 10. to B7. (A) look down A8. (A) as (D) of 16 主題2 消費經濟|

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英文 高中

求詳解，感恩

OW dyainst factories that cause pollution. 閱讀測驗3 But the universal of our climate message of crisis wareness hing a fever pitch across the with increasing urgency, a pparent every day. For the Vandana Shiva will never forget a lesson she learned at the age of 13. Her parents insisted that she should wear clothing made only of homespun cotton. One day, Vandana, having returned from a boarding school to her home, demanded a nylon dress, the fashion followed by her rich friends. Her mother agreed. “If that is what you want, of course you shall have it,” she said. “But remember, your nylon dress will help a rich man buy a bigger car. And the cotton that you wear will buy a poor family at least one meal.” Did she buy the nylon dress? Of course not! Maybe this experience led to her resolution to fight for social justice in her later years. Now 60, ever visiting Taiwan in 2010, Vandana's main concern these days is how to preserve Indian traditional crops. This is severely attacked by many global companies. They encourage farmers to grow so-called high-yielding crops; many farmers, therefore, turn to high-tech methods and depend on bioengineered seeds, chemical fertilizers and pesticides. As a result, hundreds of traditional crops are disappearing. Contrary to expectation, high-tech agriculture can not rescue Indians from starvation. Bioengineered seeds are expensive and cannot adapt to local conditions. Hundreds of Indian farmers have committed suicide during the past five he world ironment. ns in 1970. years because of failed harvests. But there is hope. Many farmers are returning to traditional methods promoted by Navdanya, an organization based in New Delhi that Vandana helped found 20 years ago. Navdanya encourages farmers to produce native varieties of crops that can be grown with natural fertilizer and no artificial chemicals. It also helps local farmers form their own self-supporting organization and seed bank. nean? +明一 生能但奇 63

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