Chứng minh BĐT sau với `x,y>=0` `x^3+y^3>=x^2y+xy^2`

Tìm chu kì của hàm số y=sinx-cos4x

1. Chỉnh lưu dòng điện là gì? Tại sao phải chỉnh lưu dòng điện?

Bài 1: (1,0 điểm) a) Viết tập hợp A gồm các số tự nhiên là bội của 6 và nhỏ hơn 40. b) Tim giao của tập hợp A và tập hợp B

VẼ CHIBI NHAA Tớ gửi tặng Miruyo dòng chữ này nhaaa :333

IIl. Put the verbs into the correct form, use will. Jim asked a fortune teller about his future. Here is what she told him: 1. You (earn). 2. You (travel)_ 3. You (meet)_ a lot of money. around the world. lots of interesting people. 4. Everybody (adore) you. 5. You (not/ have) any problems. 6. Many people (serve). you. 7. They (anticipate). 8. There (not / be). your wishes. anything left to wish for. 9. Everything (be) perfect. 10. But all these things (happen / only) if you marry me. IV.Should or shouldn't? 1. We have to wait long. The train is due in a couple of times. 2. We drink so much coffee. It's not good for us. 3. If you're not feeling very well, you 4. If the delivery is urgent, you go home. send it express post. 5. I think we get paid commission for our sales. We'd be more motivated that way! 6. I don't see my grandparents very often. I go and see them soon 7. I make so many personal calls from the office. My boss is going to notice. 8. He apologise. He was absolutely right.

Giải dùm chi tiết 49,58 vs ạ gấp 😭😭😭🙏

VI. Dùng từ trong ngoặc đề hoàn thành câu theo thì hiện tại tiếp diễn chỉ hành động trong tương lai. (Use the word in brackets to complete the sentences in the present continuous for future.) 1. He s (not, go) to school tomorrow morning. 2. They ace (they, have) a party on Friday? 3. I (call) Joe later today. 4. She (not, study) with us tonight. 5. Нe (pick) me up at one o'clock. 6. (you, meet) Toan today? 7. I (spend) the evening with Chau. 8. I (walk) around after lunch. 9. What are you doing later? I (play) soccer. 10. They (visit) the museum tomorrow.

tìm số tự nhiên n sao cho 3.(n+2) chia hết cho n - 2

VI. Dùng từ trong ngoặc đề hoàn thành câu theo thì hiện tại tiếp diễn chỉ hành động trong tương lai. (Use the word in brackets to complete the sentences in the present continuous for future.) 1. He s (not, go) to school tomorrow morning. 2. They ace (they, have) a party on Friday? 3. I (call) Joe later today. 4. She (not, study) with us tonight. 5. Нe (pick) me up at one o'clock. 6. (you, meet) Toan today? 7. I (spend) the evening with Chau. 8. I (walk) around after lunch. 9. What are you doing later? I (play) soccer. 10. They (visit) the museum tomorrow.