Đạo Hàm Của Hàm Số Y=log8(x2−3x−4) Là | Cungthi.online

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Đạo hàm của hàm số y=log8(x2−3x−4) là A. 1x2−3x−4ln8 B. 2x−3x2−3x−4ln8 C. 2x−3x2−3x−4ln2 D. 2x−3x2−3x−4 Đáp án và lời giải Đáp án:B

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Bài tập trắc nghiệm 60 phút Tính đơn điệu và đạo hàm của hàm số lũy thừa, mũ, logarit - Toán Học 12 - Đề số 11

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Một số câu hỏi khác cùng bài thi.

• Trong các hàm số sau, hàm số nào đồng biến trên R?          

• Đạo hàm của hàm số  là:         

• Đạo hàm của hàm số y=log8(x2−3x−4) là

• Đạo hàm của hàm số  là:  

• Có bao nhiêu số nguyên âm để hàm số đồng biến trên khoảng .         

• Tìm tất cả các giá trị thực của tham số m để hàm số  nghịch biến trên    

• Tính đạo hàm của hàm số .                                                      

• Cho hàm số . Phát biểu nào sau đây là đúng?  

• Cho . Hệ thức liên hệ giữa y và y' không phụ thuộc vào x là:

• Hàm số có đạo hàm là ?

• Cho hàm số . Khẳng định nào sau đây sai.

• Tính đạo hàm của hàm số  .           

• Tính đạo hàm của hàm số  .         

• Hàm số y=2x2−3x có đạo hàm là

• Tìm tất cả các giá trị của tham số để hàm số sau liên tục trên :   .

• Đạo hàm của hàm số  là:         

• Hàm số có cùng tập xác định với hàm số nào trong các hàm số dưới đây

• Tính đạo hàm của hàm số

• Tính đạo hàm của hàm số .  

• [ Mức 2] Đạo hàm của hàm số y=log32x2−x+1 là

• Hàm số  có đạo hàm  

• Trong các khẳng định sau, khẳng định nào đúng?

• Tính đạo hàm của hàm số             

• Tìm mệnh đề sai trong các mệnh đề sau:             

• Hàm số có đạo hàm là ?         

• Tính đạo hàm của hàm số .           

• Cho hàm số . Mệnh đề nào sau đây sai?  

• Cho hàm số . Khi đó:

• Cho hàm số . Mệnh đề nào dưới đây sai?         

• Tính đạo hàm của hàm số trên .         

• Tìm đạo hàm của hàm số .

• Đối với hàm số  , Khẳng định nào sau đây là khẳng định đúng?                         

• Cho hai hàm số  và . Đẳng thức nào sau đây là đúng?                                      

• Tìm tập hợp tất cả các giá trị thực của tham số  để hàm số  đồng biến trên khoảng

• Tính đạo hàm của hàm số .  

• Hàm số có đạo hàm trên khoảng là:  

• Tính đạo hàm của hàm số    

• Đạo hàm của hàm số  bằng:

• Cho . Đạo hàm cấp hai bằng:        

• Tìm tất cả các giá trị của để hàm số đồng biến trên .

Một số câu hỏi khác có thể bạn quan tâm.

• Complete the second sentence so that it has the same meaning to the first

  Do you mind if I take a photo?

  Would you mind_____

• Choose the word that has the underlined part pronounced differently from the others

• Read the following passage and mark the letter A, B,C or D on your answer sheet to indicate the correct answer to each of the questions  from 43 to 50

  Clara Barton became  known as “ The Angel of the Battlefield” during the American Civil War. Born in Oxford, Massachusetts in 1821, Clara Barton’s interest in helping soldiers on the battlefield began when she was told army stories from her father. Another event that influenced  her decision to help soldiers was an accident her brother had. His injuries were cared for by Barton for 2 year. At the time, she was only 11 years old. Barton began teaching school at the age of 15. She taught for 18 years before she moved to Washington, D.C in 1854.

  The civil war broke out 6 years later. Immediately, Barton started war service by helping the soldiers with their needs. At the battle of Bull run, Clara Barton received permission from the government  to take care of the sick and hurt. Barton did  this with great empathy and kindness. She acknowledged each soldier as a person . her endurance and courage on the battlefield were admired by many. When the war ended in 1865 , she used 4 years of her life to assist the government in searching for soldiers who were missing during the war.

  The search for missing soldiers and years of hard work made her feeble physically. In 1869, her doctors recommended a trip to Europe for a rest. While she was on vacation , she became involved with the International Red Cross, an organization set up by the Geneva Convention in 1864. Clara Barton realized that the Red Cross would be a  best help to the United States. After she returned to the United States, she worked very hard to create an American Red Cross. She talked to government leaders and let American people know about the Red Cross. In 1881, the National Society of the Red Cross was finally  established with its headquarters in Washington , D.C. Clara Barton managed its activities for 23 years.

   

  Barton never let her age stop her from helping people. At the age of 79, she helped food victims in Galveston, Texas. Barton finally resigned from the Red Cross in 1904. She was 92 years old and had truly earned her title “ The Angel of the Battle”.

  What can be the best title of the reading passage

• Tim! What …………you (do) ………… ? I want you (pay) ……...…….more attention to the lesson.

• Read the following passage and mark A, B, C, or D to indicate the correct answer to each of the blanks from 31 to 35.

  British families started going on holiday to the seaside around the middle of the 19th century. The invention of the railways made this possible. The first holidaymakers were quite rich and went for their health and education. The seaside was a place to be (31)______ of illnesses, and doctors recommended bathing in the sea and drinking sea water. Also to increase their knowledge, families attended concerts and read books from libraries.

  At that time, ordinary working people had very little time (32)______. However, in 1871, the government introduce four “Bank Holidays” – national holiday days. This allowed people to have a day or two out, which now and then gave them a taste for leisure and the seaside. At first they went on day-trips, taking (33)______ of special cheap tickets on the railways. By the 1880s, rising incomes meant many ordinary workers and their families could have a week’s holiday at the seaside. Rail fares were reduced and cheap hotels were built to (34)______ them. Holidaymakers enjoyed being idle, sitting on the beach, bathing in the sea, and eating ice-cream. Cheap entertainment was (35)______ offer and holidaymakers went to have fun.

  Today, the English seaside remained popular, with more than 18 million holidays taken there each year.

  Rail fares were reduced and cheap hotels were built to (34)______ them.

• Volunteers may be required to obtain Red Cross_______in order to serve through hospitals and healthcare organizations or provide disaster relief.

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

  Marriage nowadays is a choice people make on their own, but this has not always been the case in society. Thousands of years ago, the average lifespan was shorter than it is today. A man usually lived until he was about 40 years old, while women died even sooner because of childbirth. There were many wars and illnesses, and people had to protect themselves by having more children while they were still young. The parents lived through their children.

  Marriage was not so much a romantic love story but a business transaction, or deal. Most marriages were arranged between parents while their children were still very young. It was the custom that the fathers made the decision on whom their children were going to marry. The mothers had little say in it since they rarely made any decisions outside the household. The fathers would meet to arrange the wedding date and the money given for the bride on her wedding date. The more money and land a girl had, the more chances she had to marry well. Therefore, it was important that her father choose the bridegroom very well. Usually, it was someone who came from a good family or who was rich too. It was very unlikely that people married outside their social class. A few well-off and rich merchants got to marry poorer noblewomen and became King’s business advisors. In a way, poor peasants had an easier choice as it was less important whom they married.

  The practice of arranged marriage is still common in some countries in the Middle East, such as India or Pakistan. Here, social classes are still strongly divided and very well-kept. Often, however, arranged marriages are a sign that people do not want to let go of the past, which gives them comfort and security in an ever-changing world.

  According to paragraph 2, richer girls were more likely to                                       .

• “What’s the matter? You don’t look very well.” – “I feel a little _____.”

• Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

  It is really that many people have the misconception that reading is bored. 

• Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions from 43 to 50.

  Dark matter in the universe is believed by some scientists to be a substance that is not readily observable because it does not directly refract light or energy. Its existence can only be deduced because of the effect that it has on surrounding matter. In fact, some members of the scientific community have argued that dark matter does not actually exist. Others, however, believe in its existence, in part because the scientific community does not have a complete understanding of gravity science. On the other hand, some would argue that it is the understanding of gravitational science that leads most scientists to believe in the existence of dark matter, because without dark matter, there are many cosmological phenomena that are difficult to explain.

  For example, dark matter in the universe may have a peculiar effect on the Milky Way galaxy. Some scientists believe that the interaction between dark matter and other smaller, nearby galaxies is causing the Milky Way galaxy to take on a warped profile. It has been asserted that not only does dark matter exist, it may also be responsible for the Milky Way’s unusual shape. The interaction referenced involves two smaller galaxies near the Milky Way, called Magellanic clouds, moving through an enormous amount of dark matter, which, in effect, enhances the gravitational pull that the two Magellanic clouds could have on the Milky Way and other surrounding bodies. Without the existence of the dark matter, the Magellanic clouds would not have sufficient mass to have such a strong effect on the bend of the Milky Way galaxy.

  The strongest evidence for the validity of this hypothesis rests in Newtonian physics, and the hypothesis that anything with mass will exert a gravitational pull. The Milky Way and other galaxies with peculiar warped shapes are being molded by a gravitational force. However, there is nothing readily observable with sufficient mass that could cause such a high level of distortion via gravitational pull in the vicinity of the Milky Way. Therefore, something that is not easily observed must be exerting the necessary force to create the warped shape of the galaxy.

  Aaron Romanowsky and several colleagues have questioned the effect that dark matter might have on galaxies. They point to the existence of several elliptical galaxies surrounded by very 

  little dark matter as evidence that dark matter is not, in fact, the cause of the warped galaxies. While

  they do not claim that their findings should be interpreted to conclude that dark matter does not exist, they apparently believe that the results of their studies cast doubt on some of the conventional theories of galaxy formation and manipulation.

  Several models constructed by researchers from the University of California at Berkeley, however, point to the idea that dark matter is the most likely explanation for the distorted shape of the Milky Way and other galaxies. Using computer models, they have mapped the likely interactions between certain galaxies and the surrounding dark matter, and those models have shown not only the possibility that dark matter is responsible for the warped shape of the Milky Way, but that the relationship between the dark matter and the Magellanic clouds is dynamic; the movement of the clouds through the dark matter seems to create a wake that enhances their gravitational influence on the Milky Way.

  The passage states that some members of the scientific community are reluctant to believe in the existence of dark matter because___________.

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