ĐỀ THI THỬ ĐẠI HỌC NĂM HỌC 2012-2013 MÔN TOÁN ĐỀ 20 pptx

Nguoithay.vn Nguoithay.vn 1 Bài tp nh thc Newton 1:  trong    . 2: Tì trong    3:     . 4:   ; 5:       . Tìm . 6:  trong    7:    8:   . Tìm   . 9:   10:  trong    11:      Nguoithay.vn Nguoithay.vn 2 12:    13:  trong   14:   15:   là: 16:   trong khai  17:   trong khai  18:   19:    trình:  . 20:  21:  22: Cho   23:   ? 24:    25:  26:   27:   28:  là  Nguoithay.vn Nguoithay.vn 3 29:  + + + 30:  + + 31: Tìm sao cho: 32:   33:  34:   35:  36:  37: Tìm  n sao cho 38:   39: CMR: 40:  : 41:   . 42:  . a) Tính tích phân :  Nguoithay.vn Nguoithay.vn 4 43: CMR 44:  . 45:  46. : 47:   : 48:   : 49:   : 50: Tìm  n sao cho : 51:  trình 52:   53:  : 54:  : 55:  sau: 56:   57:  : 58:  : 59:  : 60:  g trình sau: 61: Gi¶i : 62: Gi¶i  63:   : 1:  (1) Nguoithay.vn Nguoithay.vn 5 Vì nên : (2) Tõ suy ra: (3)  2: Ta có :  là    là . 3:   . 4: 5:  ta có và  .  ta có : 6: Ta có .   . Ta có  là 7:   y   8:  Nguoithay.vn Nguoithay.vn 6    là 9:  là:  10 :  là: 11:      là 12:  tr      13:  là   là 14:   .  là 16:  Nguoithay.vn Nguoithay.vn 7  ta có : 3k +l = 5   .  20:     21:   Ta có =>  24:  và  nên n=20 25: Ta có  . Do  .  26: Ta có 40- là 28: Ta có: Cho , ta có: . 31:  32: . Vãi . Nguoithay.vn Nguoithay.vn 8 33: Theo , ta có :  . §PCM 35:  Cho 36 ta có : Cho Suy ra : 37: Ta có : , cho  38: Ta có : Vì  39: Ta có Nguoithay.vn Nguoithay.vn 9  40: Ta có (1) (2)   41:  . Hay: . 42: a) b) 43: Ta có : Nguoithay.vn Nguoithay.vn 10    44: Xét hàm: Cho  46: Ta có: .  . 47: §iÒu kiÖn * Do  *  . 48 Ta có : ó :  49:      .    trình:  . 20:  21:  . Nguoithay.vn Nguoithay.vn 7  ta có : 3k +l = 5   .  20:    