tìm tập xác định của hàm số y = sinx+cosx+tanx . Mng giảng giúp em với em cảm ơn

Các bạn giúp mình nha trả lời hết lun nha

cấu số 17 cho hàm số y=x^3-3x^2 khẳng định nào sau đây đúng

III. Choose the best answer, A or B: 1. Mai _________ three times a week. A. has English B. at school 2. How many lessons __________? A. do you have today B. she has today 3. How often does Nam _______? A. has Vietnamese B. have Vietnamese 4. What’s your __________? A. like subjects B. favorite subjects 5. We have Music ________. A. one time a week B. once a week

Ex3: Give the correct verb form: 1. If she ....................(work) hard, she .....................(pass) the exam. 2. If I ..................(come) soon, I ....................(phone) you. 3. She ...................(feel) sad if you ....................(not, give) her a gift. 4. If Peter ......................(go) to work late again, he .................(be) sacked. 5. If the boy ....................(eat) that apple, he ....................(be) ill. 6. If you .....................(not, hurry), you .....................(miss) the bus. 7. Tell him about this story if you .........................(see) him. 8. If you ..........................(have) a day off where you..............(go)? 9. If he ..................(cook) the meal himself, help him. Ex4: Write the conditional sentences from the following statements. 1. We will plant more trees. The air will be fresher. If __________________________________________________________ 2. We will use fewer cars. We will reduce pollution. If __________________________________________________________ 3. We will cycle to school every day. We will keep fitter. If __________________________________________________________ 4. We will use recycled products. We will save money. If __________________________________________________________ 5. People will throw rubbish into the right bin. They will keep the environment clean. If __________________________________________________________ 6. We will turn off the tap when brushing the teeth. We will save a lot of water. If __________________________________________________________ 7. People will travel more by public transport. The harmful gases in big cities will be reduced. If __________________________________________________________ 8. We will start at six. We will arrive there before noon. If __________________________________________________________ 9. The boy eats so may green apples. He will be ill. If __________________________________________________________ 10.We will use reusable bags for shopping. We will reduce waste If_________

ai giúp em 3 câu đầu với ạ . e cảm ơn

sau khi học bài hàm số bậc nhất học sinh làm được gì để tiếp nhận (chiếm lĩnh) và vận dụng kiến thức kĩ năng của chủ đề

Cho tam giác PQR cân tại Q,kẻ đường cao QL. Chứng minh tam giác PQL bằng tam giác RQL

phân tích 2x^3+5x^2+11x-5 thành nhân tử

Hế lô mọi người!! Vẽ cho em đậu mầm đáng yew nha