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Một số câu hỏi khác cùng bài thi.

• Cho phương trình  có 2 nghiệm . Tổng 2 nghiệm trên là:

• Tập nghiệm của bất phương trình là:  

• Các giá trị x thỏa mãn  là:

• Cho hàm số . Khẳng định nào sau đây là khẳng định sai?

• Tìm tập nghiệm S của bất phương trình

• Cho a, b là các số thực dương lớn hơn 1. Số nghiệm của phương trình là:        

• Nghiệm của phương trình là:  

• Cho , là các số thực thỏa . Khi đạt giá trị lớn nhất, thì giá trị là  

• Phương trình có tập nghiệm là ?            

• Giải phương trình , ta được nghiệm là:         

• Với giá trị nào của m, phương trình có nghiệm:  

• Tìm tất cả các giá trị thực của tham số a sao cho hàm số  đạt cực trị tại thỏa mãn: .         

• Số nghiệm của hệ phương trình là:  

• Tập nghiệm của bất phương trình là:

• Tập tất cả các nghiệm của bất phương trình là:

• Cho và . Chọn khẳng định sai trong các khẳng định sau:

• Tập nghiệm của bất phương trình $\ln x<1$ là
  

• Giải bất phương trình .

• Phương trình có mấy nghiệm?        

• Tìm tập nghiệm S của bất phương trình .

• Nếu thì:         

• Phương trình có bao nhiêu nghiệm?  

• Tìm tập nghiệm  của bất phương trình .  

• Tập nghiệm của bất phương trình  là  

• Phương trình có nghiệm là:         

Một số câu hỏi khác có thể bạn quan tâm.

• Tính biểu thức  ta được kết quả bằng         

• 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:

  Since water is the basis of life, composing the greater part of the tissues of all living things, the crucial problem of desert animals is to survive in a world where sources of flowing water are rare. And since man’s inexorable necessity is to absorb large quantities of water at frequent intervals, he can scarcely comprehend that many creatures of the desert pass their entire lives without a single drop. Uncompromising as it is, the desert has not eliminated life but only those forms unable to withstand its desiccating effects. No moist-skinned, water-loving animals can exist there. Few large animals are found. The giants of the North American desert are the deer, the coyote, and the bobcat. Since desert country is open, it holds more swift-footed running and leaping creatures than the tangled forest. Its population is largely nocturnal, silent, filled with reticence, and ruled by stealth. Yet they are not emaciated. Having adapted to their austere environment, they are as healthy as animals anywhere else in the word. The secret of their adjustment lies in the combination of behavior and physiology. None could survive if, like mad dogs and Englishmen, they went out in the midday sun; many would die in a matter of minutes. So most of them pass the burning hours asleep in cool, humid burrows underneath the ground, emerging to hunt only by night. The surface of the sun-baked desert averages around 150 degrees, but 18 inches down the temperature is only 60 degrees.  

  Question: The word “tissues” in the passage mostly means______.         

• Gọi S là số cách chọn 4 bạn từ một tổ gồm 10 bạn để trực thư viện. Tìm giá trị của S.                         

• Question 50: What is the main idea of the passage?         

  Insect's lives are very short and they have many enemies, but they must survive long enough to breed and perpetuate their kind. The less insect-like they look, the better their chance of survival. To look "inedible" by imitating plants is a way frequently used by insects to survive. Mammals rarely imitate plants, but many fish and invertebrates do. The stick caterpillar is well named. It is hardly distinguishable from a brown or green twig. This caterpillar is quite common and can be found almost anywhere in North America. It is also called "measuring worm" or "inchworm". It walks by arching its body, then stretching out and grasping the branch with its front feet then looping its body again to bring the hind feet forward. When danger threatens, the stick caterpillar stretches its body away from the branch at an angle and remains rigid and still, like a twig, until the danger has passed.  Walking sticks, or stick insects, do not have to assume a rigid, twig-like pose to find protection; they look like inedible twigs in any position. There are many kinds of walking sticks, ranging in size from the few inches of the North American variety to some tropical species that may be over a foot long. When at rest their front legs are stretched out, heightening their camouflage. Some of the tropical species are adorned with spines or ridges, imitating the thorny bushes or trees in which they live.            

  Leaves also seem to be a favorite object for insects to imitate. Many butterflies can suddenly disappear from view by folding their wings and sitting quietly among the plants that they resemble. 

   

   

• Cho Khi đó S là khai triển của nhị thức nào sau đây?                         

• Trong một môn học, cô giáo có 30 câu hỏi khác nhau trong đó có 15 câu hỏi khó, 10 câu hỏi trung bình và 5 câu hỏi dễ. Hỏi cô giáo có bao nhiêu cách để lập ra đề thi 30 câu hỏi đó, sao cho mỗi đề có 5 câu hỏi khác nhau và mỗi đề phải có đủ ba loại câu hỏi?                  

• Question 49: Which of the following is true of stick insects?         

  Insect's lives are very short and they have many enemies, but they must survive long enough to breed and perpetuate their kind. The less insect-like they look, the better their chance of survival. To look "inedible" by imitating plants is a way frequently used by insects to survive. Mammals rarely imitate plants, but many fish and invertebrates do. The stick caterpillar is well named. It is hardly distinguishable from a brown or green twig. This caterpillar is quite common and can be found almost anywhere in North America. It is also called "measuring worm" or "inchworm". It walks by arching its body, then stretching out and grasping the branch with its front feet then looping its body again to bring the hind feet forward. When danger threatens, the stick caterpillar stretches its body away from the branch at an angle and remains rigid and still, like a twig, until the danger has passed.  Walking sticks, or stick insects, do not have to assume a rigid, twig-like pose to find protection; they look like inedible twigs in any position. There are many kinds of walking sticks, ranging in size from the few inches of the North American variety to some tropical species that may be over a foot long. When at rest their front legs are stretched out, heightening their camouflage. Some of the tropical species are adorned with spines or ridges, imitating the thorny bushes or trees in which they live.            

  Leaves also seem to be a favorite object for insects to imitate. Many butterflies can suddenly disappear from view by folding their wings and sitting quietly among the plants that they resemble. 

   

• Tìm số hạng không chứa trong khai triển thành đa thức của với .

• Question 49: What is the main idea of the passage?     

  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 years. 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 big 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 flood victims in Galveston, Texas. Barton finally resigned from the Red Cross in 1904. She was 92 years old and had truly earned her titled “The Angel of the Battlefield”.    

• Biết là số nguyên dương thỏa mãn , số hạng chứa trong khai triển là: