Tìm x biết: Bài 1 1/2,4+1/4,6+...+1/(2x-2).2x=1/8 Gợi ý (x€N.x lớn hơn hoắc bằng 2)

Các câu hỏi liên quan

1. Last night we (watch) were watch tv when the power (fail) fail 2. London (change) ___________ a lot since we first (come) __________ to live here. 3. I (spend) __________ a lot of time travelling since I (get) __________this new job. 4. She (have) __________a hard life, but she’s always smiling.( Cô ấy (có) __________ một cuộc sống khó khăn, nhưng cô ấy luôn mỉm cười) 5. He sometimes (come) is come to see his parents (Anh ấy thỉnh thoảng (đến) __________ để gặp cha mẹ của mình) . 6. Last month I (be) _____________ in the hospital for ten days. 7. What you (do) are doing when I (ring) rang you last night?( Bạn (làm) ____________________ gì khi tôi (gọi) ________________ bạn đêm qua?) 8. I (not see) __________________ him since last Sunday. 9. My mother (come) __________________ to stay with us next week . 10. When he lived in Manchester, he (work) is working in a bank. 11. Columbus (discover) were discorvered America more than 400 years ago. 12. Listen! The birds (sing) is singing 13. ______You (receive) _______________ any letter from your parents yet? 14. How long ________Bob and Mary (be) ___________________ married? 15. She (ask) was asking me to tell about him several times(một vài lần). 16. John (watch) was watching TV at 8:00 last evening. 17. He (do) ________________ his homework before he (go) _____________ to the cinema. 18. Hurry up! The train (come) is coming 19. We (not talk) _______________ to each other for a long time. 20. He (feel) was feel asleep while he (do) was doing his homework. 21. I’m very fond of Jane but I (not see)……………….much of her lately. 22. There (be)………..no guests at all since I left. 23. I never(see)………….anyone more beautiful than your wife. 24. I (meet)………………..your husband this afternoon at the station. 25. He solved the problem more quickly than I (do)…………. 26. This one of the best books that I (ever read)…………………. 27. She has already telephoned the people who (come)………tomorrow. 28. I’ll never forget the kindness that you (show)………………me. 29. Are they the Italians who (own)………… this store?