download sách toán lớp 4

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Ngày tải lên: 05/09/2013, 08:10

... lượt chia như sau: VD: 43 : 5 = ? Cách 1: Đếm ngược từ 43 cho đến khi gặp một tích (hoặc số bị chia) trong bảng nhân 5 (chia 5) : 43 ; 42 ; 41 ; 40 . 40 : 5 = 8 Vậy 43 : 5 = 8 (dư 3) Cách 2: ... 6 x 4 = 6 x 3 + 6 = 24 6 x 5 = 6 x 4 + 6 … Hoặc dựa trên bảng nhân đã học: 6 x 4 = 4 x 6 = 24 15 Qua thực tế tìm hiểu tình hình dạy học phép nhân, phép chia cho học sinh lớp 3 ở ... số tự nhiên theo sách giáo khoa Toán lớp 3”. II. MỤC ĐÍCH NGHIÊN CỨU: Tìm hiểu nội dung và phương pháp dạy học phép nhân, phép chia các số tự nhiên theo sách giáo khoa Toán lớp 3. ...

Ngày tải lên: 21/01/2014, 09:20

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 30/07/2014, 14:21

Ngày tải lên: 08/10/2014, 02:18

Ngày tải lên: 06/11/2014, 16:49

Ngày tải lên: 21/03/2015, 16:12

Ngày tải lên: 28/03/2015, 10:44

Ngày tải lên: 04/04/2015, 13:32

... môn toán Nguyễn ðức Tuấn lớp 44 C1 ðại học Thủy lợi Hà nội 23 Tự ôn luyện thi ñại học môn toán Nguyễn ðức Tuấn lớp 44 C1 ... TỰ ÔN LUYỆN THI MÔN TOÁN MÔN TOÁNMÔN TOÁN MÔN TOÁN Hà nội, 1 - 2005 Tự ôn luyện thi ñại học môn toán Nguyễn ðức Tuấn lớp 44 C1 ðại học Thủy lợi Hà nội 7 Bài ... 13 . Gi ả i ph ươ ng trình: 0 4 1 xsinx4cos.xcosx4cos 22 =+−− Tự ôn luyện thi ñại học môn toán Nguyễn ðức Tuấn lớp 44 C1 ðại học Thủy lợi Hà nội 4 Bài 2: PHƯƠNG TRÌNH TRÙNG PHƯƠNG...

Ngày tải lên: 12/09/2012, 16:21

... 3 44 (x1)dx I (x4x)(x4x1) - = + ị Sử dụng đồng nhất thức: 44 1(x4x1)((x4x)=-+ Ta được: 44 333 44 44 [(x4x1)(x4x)](x1)dx(x1)dx(x1)dx I (x4x)(x4x1)x4xx4x1 -+ ==- + + òòò 4 44 4 11x4x (ln|x4x|ln|x4x1|)ClnC. 44 x4x1 - = ... haứm soỏ: 4 44 cosx f(x) sinxcosx = + Giải: Chọn hàm số phụ: 4 44 sinx g(x) sinxcosx = + Gọi F(x) và G(x) theo thứ tự là nguyên hàm của các hàm số f(x), g(x). Ta coự: 44 1 44 sinxcsx f(x)g(x)1F(x)G(x)dxxC sinxcosx + +==ị+==+ + ũ ... Tích phân Trang 47 Ví dụ 19: Tính tích phân bất định: 4 4 1x Idx. x(1x) - = + ị Giải: Đặt 4 tx= . Suy ra: 4 3 4 1x11t dt4xdx&. 4t(1t)x(1x) == ++ Khi đó: 11t Idt 4t(1t) - = + ị ...

Ngày tải lên: 12/09/2012, 16:21