Xét chiều biến thiên của hàm số sau: y = | x² - 2x |

Các câu hỏi liên quan

Exercise 2. Kết hợp hai câu lại với nhau dùng đại từ quan hệ. 1. The doctor is with a patient. The patient’s leg was broken in an accident. →the doctor is with the patient whose leg was broken in an accident 2. Jane is the woman. Jane is going to China next year →Jan is the woman who is going to China next year 3. Janet wants a typewriter. The typewriter self corrects. → 4. I found this book last week. The book contains some useful information. → 5. Mr. Bryant’s team has lost the game. He looks very sad. → 6. James wrote an article. The article indicated that he disliked the President. → 7. The director of the program is planning to retire next year. The director graduated from Harvard University. → 8. This is the book. I’ve been looking for this book all year. → 9. William wants to become a judge. William’s brother is a lawyer. → 10. The last record became a gold record. The record was produced by this company. → 11. Checking accounts are very common now. The Checking accounts require a minimum balance. → 12. Felipe bought a camera. The camera has three lenses. → 13. Frank is the man. We are going to nominate Frank for the officer in the school (nominate sb for/to a post = appoint ) 14. She is the woman. I wrote to her. → 15. They’re the people. I was talking about them. → 16. John received a scholarship. John’s grades are the highest in the school. → 17. That is the dog. I was afraid of it. → 18. Mr Cox is the manager. I am phoning for him. → 19. That is the tunnel, He went through it. → 20. She is the lady. He argued with her. → 21. She is the policewoman. The driver spoke to her. → 22. That is the mistake. I am complaining about it. → 23. He is the man. The novel was written by him. → 24. That is the shop. I bought a radio from it. → 25. Mr Cox is the manager. He saw Ann. → 26. Those men saved my life. They pulled from the burning car. → 27. That woman travels everywhere by private plane. She is a millionaire. → 28. That hotel’s near the beach. It’s the most expensive. → 29. Those birds migrate to Antartica. They breed near the North Pole. → 30. He is the criminal. The police are looking for him. → 31. These are the books. I use them in class. → 32. The blue car crashed. It was a Ford. → 33. That’s the travel agency. It sells cheap tickets. → 34. They are the spies. The police have been watching them. → 35. That is the name. I couldn’t remember it yesterday. → 36. Those are the astronauts. They were in orbit for six months. → 37. My parents send their best wishes. You met them last month. → 38. The parcel contained a bomb. They had opened it carefully. → 39. The match will be shown on TV tonight. They filmed it this afternoon. → 40. His sisters are identical twins. I saw them last year. → 41. The film is about two people. Their plane crashed in the jungle. → 42. The play is about a King. His ambition is to rule the world. → 43. The ballet is about the princess. Her stepmother hated her. → 44. The song is about 2 young lovers. Their romance ended happily. → 45. Charlie Chaplin died in 1977. His film amused millions. → 46. Rod Lee, the actor, has just won an Oscar. I know her sister. → 47. Our teacher speaks English perfectly. Her parents are Greek. →