Sách Toán – Học Toán – Đề Thi Toán https://booktoan.com Học toán, Đề thi toán, Sách giáo khoa Toán, trắc nghiệm Toán online Thu, 08 Oct 2026 01:05:36 +0000 vi hourly 1 https://wordpress.org/?v=7.1.3 Cho dãy số $(u_n)$ với $u_n = \frac{3n – 2}{n + 1}$. Xét tính đúng hoặc sai của các khẳng định sau: https://booktoan.com/cho-day-so-u_n-voi-u_n-frac3n-2n-1-xet-tinh-dung-hoac-sai-cua-cac-khang-dinh-sau.html https://booktoan.com/cho-day-so-u_n-voi-u_n-frac3n-2n-1-xet-tinh-dung-hoac-sai-cua-cac-khang-dinh-sau.html#respond Thu, 08 Oct 2026 01:03:05 +0000 https://booktoan.com/cho-day-so-u_n-voi-u_n-frac3n-2n-1-xet-tinh-dung-hoac-sai-cua-cac-khang-dinh-sau.html https://booktoan.com/cho-day-so-u_n-voi-u_n-frac3n-2n-1-xet-tinh-dung-hoac-sai-cua-cac-khang-dinh-sau.html/feed 0 Cho dãy số $(u_n)$ có số hạng tổng quát $u_n = \frac{3n – 2}{n + 1}$ với $n \in \mathbb{N}^*$. Xét tính đúng, sai của các mệnh đề sau https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac3n-2n-1-voi-n-in-mathbbn-xet-tinh-dung-sai-cua-cac-menh-de-sau.html https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac3n-2n-1-voi-n-in-mathbbn-xet-tinh-dung-sai-cua-cac-menh-de-sau.html#respond Thu, 08 Oct 2026 00:59:37 +0000 https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac3n-2n-1-voi-n-in-mathbbn-xet-tinh-dung-sai-cua-cac-menh-de-sau.html https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac3n-2n-1-voi-n-in-mathbbn-xet-tinh-dung-sai-cua-cac-menh-de-sau.html/feed 0 Cho dãy số $(u_n)$ có số hạng tổng quát $u_n = \frac{n – 1}{n + 2}$ với $n \in \mathbb{N}^*$. Khẳng định nào sau đây là đúng? https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-racn-1n-2-voi-n-in-mathbbn-khang-dinh-nao-sau-day-la-dung.html https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-racn-1n-2-voi-n-in-mathbbn-khang-dinh-nao-sau-day-la-dung.html#respond Thu, 08 Oct 2026 00:57:59 +0000 https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-racn-1n-2-voi-n-in-mathbbn-khang-dinh-nao-sau-day-la-dung.html https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-racn-1n-2-voi-n-in-mathbbn-khang-dinh-nao-sau-day-la-dung.html/feed 0 Cho dãy số $(u_n)$ với $u_n = \frac{2n – 1}{n + 2}$. Khẳng định nào sau đây là đúng? https://booktoan.com/cho-day-so-u_n-voi-u_n-frac2n-1n-2-khang-dinh-nao-sau-day-la-dung.html https://booktoan.com/cho-day-so-u_n-voi-u_n-frac2n-1n-2-khang-dinh-nao-sau-day-la-dung.html#respond Thu, 08 Oct 2026 00:54:06 +0000 https://booktoan.com/cho-day-so-u_n-voi-u_n-frac2n-1n-2-khang-dinh-nao-sau-day-la-dung.html https://booktoan.com/cho-day-so-u_n-voi-u_n-frac2n-1n-2-khang-dinh-nao-sau-day-la-dung.html/feed 0 Cho dãy số $(u_n)$ có số hạng tổng quát $u_n = \frac{2n – 1}{n + 1}$. Khẳng định nào sau đây là đúng? https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac2n-1n-1-khang-dinh-nao-sau-day-la-dung.html https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac2n-1n-1-khang-dinh-nao-sau-day-la-dung.html#respond Thu, 08 Oct 2026 00:50:26 +0000 https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac2n-1n-1-khang-dinh-nao-sau-day-la-dung.html https://booktoan.com/cho-day-so-u_n-co-so-hang-tong-quat-u_n-frac2n-1n-1-khang-dinh-nao-sau-day-la-dung.html/feed 0 Chinh Phục Toàn Diện Chuyên Đề Bài Tập Dãy Số – Toán 11: Từ Cơ Bản Đến Nâng Cao Kèm Lời Giải Chi Tiết https://booktoan.com/chinh-phuc-toan-dien-chuyen-de-bai-tap-day-so-toan-11-tu-co-ban-den-nang-cao-kem-loi-giai-chi-tiet.html https://booktoan.com/chinh-phuc-toan-dien-chuyen-de-bai-tap-day-so-toan-11-tu-co-ban-den-nang-cao-kem-loi-giai-chi-tiet.html#respond Tue, 14 Apr 2026 07:04:41 +0000 https://booktoan.com/chinh-phuc-toan-dien-chuyen-de-bai-tap-day-so-toan-11-tu-co-ban-den-nang-cao-kem-loi-giai-chi-tiet.html https://booktoan.com/chinh-phuc-toan-dien-chuyen-de-bai-tap-day-so-toan-11-tu-co-ban-den-nang-cao-kem-loi-giai-chi-tiet.html/feed 0 Tìm số hạng tổng quát của dãy số cho bởi hệ thức truy hồi u_{n+1} = 2u_n + 5 https://booktoan.com/tim-so-hang-tong-quat-cua-day-so-cho-boi-he-thuc-truy-hoi-u_n1-2u_n-5.html https://booktoan.com/tim-so-hang-tong-quat-cua-day-so-cho-boi-he-thuc-truy-hoi-u_n1-2u_n-5.html#respond Tue, 14 Apr 2026 06:24:53 +0000 https://booktoan.com/tim-so-hang-tong-quat-cua-day-so-cho-boi-he-thuc-truy-hoi-u_n1-2u_n-5.html https://booktoan.com/tim-so-hang-tong-quat-cua-day-so-cho-boi-he-thuc-truy-hoi-u_n1-2u_n-5.html/feed 0 Tìm công thức số hạng tổng quát của dãy số (u_n) biết u_1 = 5 và u_{n+1} = 3u_n – 4 https://booktoan.com/tim-cong-thuc-so-hang-tong-quat-cua-day-so-u_n-biet-u_1-5-va-u_n1-3u_n-4.html https://booktoan.com/tim-cong-thuc-so-hang-tong-quat-cua-day-so-u_n-biet-u_1-5-va-u_n1-3u_n-4.html#respond Tue, 14 Apr 2026 03:42:57 +0000 https://booktoan.com/tim-cong-thuc-so-hang-tong-quat-cua-day-so-u_n-biet-u_1-5-va-u_n1-3u_n-4.html https://booktoan.com/tim-cong-thuc-so-hang-tong-quat-cua-day-so-u_n-biet-u_1-5-va-u_n1-3u_n-4.html/feed 0 Cho dãy số \(({u_n})\)thỏa mãn: \(\left\{ \begin{array}{l}{u_1} = 1\\{u_{n + 1}} = \sqrt {\frac{2}{3}{u_n}^2 + \frac{{n – 2}}{{{n^2} + n}}} \end{array} \right.;\forall n \in N*\) Tìm công thức số hạng tổng quát của dãy số \(({u_n})\)và tính \(\lim {u_n}\). https://booktoan.com/cho-day-so-u_nthoa-man-left-beginarraylu_1-1u_n-1-sqrt-frac23u_n2-fracn-2n2-n-endarray-right-forall-n-in-n-tim-c.html https://booktoan.com/cho-day-so-u_nthoa-man-left-beginarraylu_1-1u_n-1-sqrt-frac23u_n2-fracn-2n2-n-endarray-right-forall-n-in-n-tim-c.html#respond Wed, 27 Oct 2021 06:40:55 +0000 https://booktoan.com/?p=188985 https://booktoan.com/cho-day-so-u_nthoa-man-left-beginarraylu_1-1u_n-1-sqrt-frac23u_n2-fracn-2n2-n-endarray-right-forall-n-in-n-tim-c.html/feed 0