... well-informed and have the benefit of their perspective and experience dangthanhdat2106@gmail.com 34 64 A company is going to give some money either to support the arts or to protect the environment ... have that option, and I have never walked 40 miles ins one trip I usually depend on the bus and trains, and would so in dangthanhdat2106@gmail.com 43 this circumstance They are cheap, dependable ... dangthanhdat2106@gmail.com 44 don’t like to make presentations in class I know I’ll make mistakes, even if I’m thoroughly prepared and know all about my topic Nothing but experience can help me 83 PR Some people...
... Easter Monday are both (44 ) holidays In the US, each company decides for itself (45 ) to close or remain open on those days Question 36 : A take B use C spend D expend Question 37 : A fair B festival ... Question 38 : A for B as C and D nor Question 39 : A familiar B ordinary C common D regular Question 40 : A put on B take on C bore D wore Question 41 : A letters B envelopes C cards D notes Question 42 : ... C to D from Question 43 : A missed B recalled C reminded D remembered Created & Released by ĐỗBình – THPT Liễn Sơn, Lập Thạch, vĩnh Phúc – binhbac72@gmail.com Question 44 : A family B nation C...
... Question 40 According to the passage, when did de Tocqueville visit America? A 1 830 s B 1 831 C 1 831 -32 D 1 835 Question 41 The phrase “these traits” in lines 9-10 refers to A observations B how Americans ... to each of the questions from 38 to 47 Question 38 What is the passage primarily about? A Alexis de Tocqueville C the progress achieved in America within about 40 years after adoption of the ... powers of observation Question 43 The word “unique” in line 16 is closest in meaning to A clearly identifiable B outstanding C unmatched D positive Question 44 The word “neutral” in line 16...
... 18 C 19 C 20 C 21 B 22 C 23 C 24 B 25 C 26 C 27 B 28 A 29 D 30 B 31 C 32 C 33 B 34 A 35 D 36 C 37 B 38 B 39 A 40 B 41 B 42 A 43 D 44 A 45 D 46 C 47 B 48 D 49 D 50 D Giáo viên: Đỗ Ngọc Hà Phạm ... 18 B 19 C 20 A 21 D 22 D 23 D 24 D 25 A 26 A 27 A 28 D 29 C 30 C 31 C 32 C 33 A 34 D 35 A 36 D 37 C 38 D 39 B 40 C 41 A 42 A 43 A 44 D 45 B 46 B 47 A 48 A 49 D 50 C Giáo viên: Đỗ Ngọc Hà Phạm ... phần 3) 01 C 02 D 03 C 04 C 05 B 06 D 07 D 08 A 09 C 10 B 11 B 12 D 13 C 14 A 15 A 16 D 17 A 18 D 19 C 20 B 21 A 22 D 23 B 24 B 25 A 26 B 27 B 28 C 29 C 30 C 31 D 32 C 33 C 34 C 35 B 36 C 37 B 38 ...
... Question 32 A community B experience C continental D convenient Question 33 A influence B injury C inherit D integrate Question 34 A tolerate B tendency C property D employment Question 35 A cafeteria ... order Question 44 : Most people get fewer colds in the summer than in the winter A A person is more likely to get a cold in the winter than in the summer CREATED & RELEASED by ĐỗBình – THPT Liễn ... 21: A give B put C takes D has Question 22: A in B at C by D to Question 23: A danger B harm C risk D threat Question 24: A just B well C such D even Question 25: A strong B strict C heavy D severe...
... Question 46 A Question 47 A license Question 48 A requires Question 49 A therefore Question 50 A such as Question 51 A appliance Question 52 A increased Question 53 A effect Question 54 A with B jobs ... Question 43 The word "indispensable" is closest in meaning to A necessary B complicated C expensive D simple By ĐỗBình – THPT Liễn Sơn, Lập Thạch, Vĩnh Phúc – www.violet.vn/quocbinh72 Trang 3/ 6 ... and ( 53) the lives of more and more people Education can help a person understand these changes and provide him ( 54) the skills for adjusting to them Question 45 A works Question 46 A...
... a 13 d 14 d 15 a 16 c 17 b 18 c 19 d 20 b 21 c 22 b 23 a 24 d 25 c 26 d 27 d 28 b 29 c 30 a Sách Giải – Người Thầy bạn http://sachgiai.com/ 31 d 32 b 33 b 34 c 35 a 36 d 37 c 38 b 39 d 40 a 41 ... b 39 d 40 a 41 a 42 c 43 c 44 b 45 c 46 b 47 d 48 d 49 c 50 d 51 c 52 a 53 b 54 d 55 d 56 c 57 a 58 d 59 a 60 d 61 c 62 d Sách Giải – Người Thầy bạn http://sachgiai.com/ 63 a 64 b 65 a 66 c 67 ... b 65 a 66 c 67 a 68 d 69 a 70 c 71 b 72 c 73 b 74 c 75 d 76 a 77 b 78 b 79 c 80 d 81 a 82 d 83 c 84 b 85 c 86 d 87 d 88 a 89 b 90 a 91 c 92 c 93 d 94 b 10 Sách Giải – Người Thầy bạn http://sachgiai.com/...
... 32 − = ⇒ IH = ⇔ d ( I ; ( P )) = ⇔ − a + 2c a + 9a + c 2 ( = ⇔ a − 4ac + 4c = 10a + c ) a = ⇔ 39 a + 4ac = ⇔ a ( 39 a + 4c ) = ⇒ a = 4; c = 39 Nếu a = ⇒ ( P ) : x = 3 ; Nếu a = 4; c = 39 ... (a + b + c ) = (a + b + c)2 333 4( a + b + c ) a b c Khi P = = 4 + 4 + 4 ( a + b + c )3 a+b+c a+b+c a+b+c 4a 4b 4c Đặt x = ;y= ;z = từ phép đặt ta có a+b+c a+b+c ... nP ; nQ = (10; 3; −2 ) Giả sử M = ∆ ∩ d1 M ( −5 + 2m ;3 − 4m; −1 + 3m ) ⇒ ⇒ MN = ( − 2n − 2m; 4 + 3n + 4m ;3 + 4n − 3m ) N = ∆ ∩ d2 N ( − 2n; −1 + 3n; + 4n ) Tham gia khóa...
... -π/6 x − - /3 -π /4 - /2 -1 -π/2 30 0 π 45 0 π 600 π 900 π t' 1200 2π 34 -1 -π /3 y' Hslg + O - /2 00 /3 A (Điểm gốc) -1/2 Góc /2 5π/6 π /3 π /3 /2 3 /4 x' π/2 135 0 3 - 1500 5π 1800 36 00 π 2π sin ... y = 34 8) x + y − xy = x + y = 3) (1;5),(5;1),(2 ;3) , (3; 2) 5) (2 ;3) ; (3; 2) x+ y=1 Với giá trò m hệ phương trình sau có nghiệm: x x + y y = − 3m 13 6) (1 ;4) , (4; 1) x−2 + y +3 = ... -2.5 CÁC ĐỊNH LÝ CƠ BẢN: -3 -3 -3. 5 -3. 5 23 1 1.5 2.5 3. 5 4. 5 x ⇔ M=N Đònh lý 1: Với < a ≠ : aM = aN Đònh lý 2: Với < a N (nghòch biến) Đònh lý 3: Với a > : aM < aN ⇔ M < N (đồng...
... + x2; x 23 = x2 + x3; x 13 = x1 + x3; x1 23 = x1 + x2 + x2 x +x −x x + x 23 − x 13 x + x 23 − x12 x + x + x 23 x1 = 12 13 23 ; x2 = 12 ; x3 = 12 ; x1 23 = 12 13 CÂU 2 2 HỎI TRẮC NGHIỆM Câu 34 9 Xét dao ... =10cos(ωt + π /4) B x = 5cos(ωt + π /4) C x = 5cos(ωt - π /3) D x = 5cos(ωt + π /3) Câu 37 2 Dao động tổng hợp ba dao động: x1 = 4cos4πt; x2 = 4cos (4 t + 3 /4) x3 = 3cos (4 t + π /4) là: A x = 7cos (4 t + π/6) ... với mặt đất Biết bán kính trái đất 640 0km Khi đưa đồng hồ xuống mặt đất tuần lễ đồng hồ chạy: A nhanh 4 ,32 s B nhanh 30 ,24s C chậm 30 ,24s D chậm 4 ,32 s Câu 30 0 Đồng hồ lắc chạy (chu kì T = 2s) nơi...
... a ca 3c 12 3b 18 b a c 1 ca 33 a abc 13a c c 3b 24 44 a b b c c 26 13 18 24 48 a abc 12 26 24 b 13 24 48 Cộng theo vế bất đẳng thức ta được: 1 13 13 121 ... ; x3 t1 ; x4 t2 Như ta có x1 x4 ; x2 x3 Ta có y ' x3 x Suy tổng hệ số góc tiếp tuyến giao điểm với đồ thị C là: 33 k1 k2 k3 k4 4x1 4x1 4x1 4x2 ... 2 z ' z 2P 3 P 3 4P 8P 3 Giá trị nhỏ P 36 36 P 23 x , xảy chẳng hạn khi: P ;y 31 23 Giá trị lớn 20 , xảy chẳng hạn khi: 66 31 ;z 31 x 2; y 0; z ...
... (2 x 9) x 3x 3x 14 x x 4y y 4y 4y y2 0.25 3x x x 14 x 0.25 0.25 y2 x 3x 4y x 3x 14 x x x x x 4 y y2 x 4y y2 y www.mathvn.com 3x x 0.25 ( x 5) (3 x 1) x y2 x ( x 5) 3x 3x (3x 1) y x 1 (3x 1) 0, ... y2 = 2 = x3 + y3 x+y (x + y)(x + y ) ) 0.25 x +y ; : = (x2 + y2 )3 = x6 + y6 + 3x2y2(x2 + y2) = x6 + y6 + 6x2y2 = (x3 + y3)2 2x3y3 + 6x2y2 2x3y3 6x2y2 = t2 * 2(x3 + y3) = (x3 + y3)(x2 + y2) ... A 74 = 5. 840 = 42 00 s gm ch s khỏc ú cha b 1 23 Trong cỏc s trờn, cú A 63 = 4. 120 = 48 0 s cú ch s ng u Cú A 74 - A 63 = 37 20 s phi tỡm ú cú mt b 1 23 TH : S phi tỡm cú mt b 32 1 (lp lun tng t) Cú 37 20...
... 2cos2x - = - 2sin2x c) Sin3x = 3sinx - 4sin3x Thần chú: sin 3, 4 cos 4 ,3 Thầ d) Cos3x = 4cos3x - 3cosx tan x e) tan2x = − tan x ; tan x − tan x tan3x = − tan x 7) Công thức biến đổi tổng thành tích: ... độ giao điểm đồ thị cho là: x =0⇒ y =0 3 x + x + 3x = x x + x + x = x = 3 − ⇒ y = 3 − 3 x = 3 + ⇒ y = 3 + Vậy đồ thị cho giao điểm là: A(0;0), B( -3- ; -3- ), C( -3+ ; -3- ) Quyển - Tháng ... b) y = (x - 1 )3 c) y = - x3 - 3x + d) y = - x3 + 3x2 - 3x - Bài 1.2) Khảo sát biến thiên vẽ đồ thị hàm số sau: a) y = x3 +3x2 - 9x + c) y = − x − x − 3x + e) y = ( x − 3x − x − 5) Quyển - Tháng...
... ln 3x (6x +4) +3 dx 3x dx 3x (2 )dx 3x 2 dx d(3x+2) 3x 0,25 0,25 R), ta cú: z z 7i 49 Vy z Ta có: Cn Cn 3x y x y 44 2 4b n n(n 1) n n 7 .3! n(n 1)(n 2) 5n 36 n n 9.C9 89 0,25 Suy a hệ số x biểu ... hp cng cú : 36 0 s Vy ta cú tt c 5 .36 0 = 1800 s x Khai trin v thu gn biu thc M ta c: M = 16x2y2 + 12(x3 + y3) + 34 xy T x + y = 1ta cú = (x + y )3 = x3 + y3 + 3xy( x+ y) x3 + y3 =1 - 3xy Nờn M = ... AB;SD) = x 3t ; d2: y t d1 ; B(-5 + 4m; -7 + 3m) d2 3t 4m P l trung im ca AB , ta cú : t 3m 0,25 4m 3m A(7 + 3t; -3 + t) t=- 0,25 t m 2 A(1 ;-5) v AP (1;2) 0,25 ng thng i qua P(2; -3) v cú VTCP...