Đáp án:
Giải thích các bước giải:
`D = 2/(2.3.4) + 2/(3.4.5 ) +...........+ 2/(37.38.39) + 2/(38.39.40)`
`D = 1/2.3 - 1/3.4 + 1/3.4 - 1/4.5 +.........+ 1/37.38 - 1/38.39 + 1/38.39 - 1/39.40`
`D = 1/6 - 1/1560`
`D = 259/1560`
Giúp mình với mình đang cần gấp lắm rồi.
vẽ mầm tức điên đg ngồi nhìn máy tính nói - toàn quảng cáo vậy trời teo tức rồi à nhen
giúp mik làm này với , mik đg cần gấp sẽ cảm ơn +vote đầy đủ
mình cần rất câu chữa lỗi này ạ thanksss các bạn
Dịch sang tiếng việt Mai's mum: What are you doing, Mai? Mai: I'm preparing for a trip to the Temple of Literature and the Imperial Academy. Mai's mum: Oh, I see. You know that it's a famous historic and cultural place. Mai: Of course, Mum. Mai's mum: Did you know that it was started in the 11th century? The Imperial Academy is considered the first university in Viet Nam. Mai: Yeah, we learned about that in school. Mum, this is the list of the things I plan to take with me. Mai's mum: Let me have a look. ... You definitely don't need an umbrella. It's winter and there's not much rain. Mai: Will it be cold? Mai's mum: Yes, it's a good idea to take warm clothes. Mai: I see. Mai's mum: The Temple of Literature is a beautiful place. It's surrounded by trees and contains many interesting things. You'd better take the camera. Mai: I will, Mum.
coó bao nhiêu số tự nhiên có 5 chữ số đôi một khác nhau sao cho số 3 đứng chính giữa
Tìm GTLN của C= 2021 trừ căn bậc 2 của x-4 nhân căn x+4
thực hiện phép chia F(x) = 19x mũ 2 - 11x mũ 3 + 9 - 20x + 2x mũ 4 , G(x) = 1+ x mũ 2 - 4x cần gấp
Viết lại câu giữ nguyên nghĩa với những cấu trúc nguyên nhân kết quả: 1.Because I am too poor, I cannot buy this house. => Because of_________________ 2.Because the dress was so beautiful, I bought it. => Due to ____________________ 3.Because the dog was too aggressive, the children were scared. => As a result of _______________ 4. She’s so ugly that no one wants to play with her. =>She is such a________________ 5. Rain was so heavy that the streets were flooded. =>Because____________________ 6. He tried very hard. As a result, he passed a master’s degree =>Because he__________________ 7. This shirt is torn. Therefore, I take it for repairs. =>Because this shirt______________ 8. He is too fat to fit this suit. => ____________________________ 9. This movie is so good, lots of people have watched it. =>Since ________________________ 10. I lost a lot of money; my mom was very angry. =>Because _______________________
Cho tam giác ABC có AB=4,BC=5,CA=6. Chứng minh rằng góc B= 2 góc C
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến