A. \(A_5^2.A_7^4\)
B. \(C_5^2.C_7^4\)
C. \(C_5^2 + C_7^4\)
D. \(A_5^2 + A_7^4\)
A. -4
B. 10
C. 6
D. -10
A. (-1;1)
B. (0;1)
C. \(\left( {4; + \infty } \right)\)
D. \(\left( { - \infty ;2} \right)\)
A. y = -1
B. x = 2
C. x = 5
D. y = 1
A. 3
B. 4
C. 2
D. 1
A. x = 2
B. y = 2
C. \(y = \frac{3}{4}\)
D. \(x = \frac{3}{4}\)
A. \(y = \frac{{x - 2}}{{x - 1}}\)
B. \(y = \frac{{x - 2}}{{x + 1}}\)
C. \(y = \frac{{2x + 1}}{{x - 1}}\)
D. \(y = - {x^3} + 3x + 2\)
A. (C) không cắt trục hoành.
B. (C) cắt trục hoành tại một điểm.
C. (C) cắt trục hoành tại hai điểm.
D. (C) cắt trục hoành tại ba điểm.
A. \(P = {\log _2}{\left( {\frac{a}{b}} \right)^2}\)
B. \(P = {\log _2}{\left( {ab} \right)^2}\)
C. \(P = {\log _{\frac{1}{2}}}{\left( {\frac{a}{b}} \right)^2}\)
D. \(P = {\log _2}\left( {{a^2} + {b^2}} \right)\)
A. \(y' = {5^{2x + 3}}\ln 5.\)
B. \(y' = {5^{2x + 3}}.\)
C. \(y' = \frac{{{5^{2x + 3}}}}{{2\ln 2}}.\)
D. \(y' = {2.5^{2x + 3}}\ln 5.\)
A. \({a^{\frac{7}{2}}}\)
B. \({a^{\frac{7}{3}}}\)
C. \({a^{\frac{1}{3}}}\)
D. a5
A. x= 2
B. \(x = - \frac{3}{2}\)
C. x = 1
D. x = -1
A. \(\left[ {0; + \infty } \right)\backslash \left\{ 1 \right\}\)
B. \(\left( {0; + \infty } \right)\backslash \left\{ 1 \right\}\)
C. \(\left[ { - 2; + \infty } \right)\)
D. \(\left( { - 2; + \infty } \right)\)
A. \(\int {f(x)dx = 2{x^4} + 5x + C} \)
B. \(\int {f(x)dx = \frac{1}{2}{x^4} - 5x + C} \)
C. \(\int {f(x)dx = {x^4} + 5x + C} \)
D. \(\int {f(x)dx = \frac{1}{2}{x^4} + 5x + C} \)
A. \(\int {f(x)dx = \frac{1}{3}\cos 3x + C} \)
B. \(\int {f(x)dx = - \frac{1}{3}\cos 3x + C} \)
C. \(\int {f(x)dx = 3\cos 3x + C} \)
D. \(\int {f(x)dx = - 3\cos 3x + C} \)
A. 8
B. 2
C. -2
D. 15
A. 3 - 2i
B. 1 - 4i
C. - 1 + 2i
D. 3 + 2i
A. A( - 4; - 3)
B. B(3;4)
C. \(C\left( {4; - 3} \right)\)
D. \(D\left( {4;3} \right)\)
A. V = B.h
B. \(V = \frac{1}{3}B.h\)
C. \(V = \frac{1}{6}B.h\)
D. \(V = \frac{1}{2}B.h\)
A. 56
B. 28
C. 65
D. 82
A. \(V = \frac{4}{3}\pi {R^3}\)
B. \(V = \frac{1}{3}\pi {R^3}\)
C. \(V = 4\pi {R^2}\)
D. \(V = 4\pi {R^3}\)
A. \(V = 15\pi {\rm{c}}{{\rm{m}}^2}\)
B. \(V = 90\pi {\rm{c}}{{\rm{m}}^2}\)
C. \(V = 45\pi {\rm{c}}{{\rm{m}}^2}\)
D. \(V = 60\pi {\rm{c}}{{\rm{m}}^2}\)
A. I(2;0;8)
B. I(2;-2;-1)
C. I(-2;2;1)
D. I(1;0;4)
A. \(I\left( { - 3;0;1} \right),R = 5.\)
B. \(I\left( {3;0; - 1} \right),R = \sqrt 5 .\)
C. \(I\left( { - 3;0;1} \right),R = \sqrt 5 .\)
D. \(I\left( {3;0; - 1} \right),R = 5.\)
A. 3x - 2y + 5z - 2 = 0.
B. 3x - 2y + 5z + 2 = 0.
C. 3x - 2y + 3z + 2 = 0.
D. 3x - 2y + 3z - 2 = 0.
A. \(\left\{ \begin{array}{l} x = 1 + t\\ y = - 2 + t\\ z = 5 - 2t \end{array} \right.\)
B. \(\left\{ \begin{array}{l} x = 1 + t\\ y = - 2 - 2t\\ z = 5 + 2t \end{array} \right.\)
C. \(\left\{ \begin{array}{l} x = 1 + 2t\\ y = - 2 + 2t\\ z = 5 + 4t \end{array} \right.\)
D. \(\left\{ \begin{array}{l} x = 1 + t\\ y = - 2 - 2t\\ z = 5 - 2t \end{array} \right.\)
A. \(\frac{1}{2}\)
B. \(\frac{1}{3}\)
C. \(\frac{1}{4}\)
D. \(\frac{1}{5}\)
A. \(y = \frac{{x + 1}}{{x + 3}}\)
B. \(y = \frac{{x - 1}}{{x - 2}}\)
C. \(y = {x^3} + x\)
D. \(y = - {x^3} - 3x\)
A. \(M = \frac{{13}}{4}\)
B. M = 1
C. M = -3
D. M = 3
A. \(x \in \left( {1;2} \right)\)
B. \(x \in \left( { - \infty ;1} \right) \cup \left( {2; + \infty } \right)\)
C. \(x \in \left( { - \infty ; - 2} \right) \cup \left( { - 1; + \infty } \right)\)
D. \(x \in \left( { - 2; - 1} \right)\)
A. I = 7
B. I = 6
C. I = 5
D. I = 4
A. \(|w| = \sqrt {10} \)
B. \(|w| = 2\sqrt {10} \)
C. \(|w| = 3\sqrt {10} \)
D. \(|w| = 5\sqrt {10} \)
A. \(\frac{1}{{\sqrt 2 }}\)
B. \(\frac{1}{{\sqrt 3 }}\)
C. \(\frac{1}{2}\)
D. \(\frac{1}{3}\)
A. h = a
B. \(h = a\sqrt 7 \)
C. \(h = \sqrt 3 a\)
D. \(h = a\sqrt 5 \)
A. \({(x + 1)^2} + {(y - 4)^2} + {(z - 2)^2} = 3\)
B. \({(x + 1)^2} + {(y - 4)^2} + {(z - 2)^2} = 9\)
C. \({(x - 1)^2} + {(y + 4)^2} + {(z + 2)^2} = 3\)
D. \({(x - 1)^2} + {(y + 4)^2} + {(z + 2)^2} = 9\)
A. \(\left\{ {\begin{array}{*{20}{c}} {x = 1 + 2t}\\ {y = - 2 + t}\\ {z = 3 - 6t} \end{array}} \right.{\rm{ }}(t \in R)\)
B. \(\left\{ {\begin{array}{*{20}{c}} {x = 1 + t}\\ {y = - 2 - 4t}\\ {z = 3 - 2t} \end{array}} \right.{\rm{ }}(t \in R)\)
C. \(\left\{ {\begin{array}{*{20}{c}} {x = 1 + t}\\ {y = - 2 + 4t}\\ {z = 3 - 2t} \end{array}} \right.{\rm{ }}(t \in R)\)
D. \(\left\{ {\begin{array}{*{20}{c}} {x = 1 - t}\\ {y = - 2 - 6t}\\ {z = 3 - 2t} \end{array}} \right.{\rm{ }}(t \in R)\)
A. M = f(0)
B. M = f(3)
C. M = f(1)
D. M = f(2)
A. 23
B. 234
C. 32
D. 242
A. \(I = \frac{2}{3}\)
B. \(I = \frac{4}{3}\)
C. \(I = \frac{3}{2}\)
D. \(I = \frac{3}{4}\)
A. 3
B. 1
C. 4
D. 2
A. \(\frac{{{a^3}\sqrt 3 }}{9}\)
B. \(\frac{{{a^3}\sqrt 3 }}{{18}}\)
C. \(\frac{{{a^3}\sqrt 3 }}{{24}}\)
D. \(\frac{{{a^3}\sqrt 3 }}{{15}}\)
A. \(V = \frac{{4\sqrt 3 }}{\pi }\)
B. \(V = \frac{{3\sqrt 2 }}{\pi }\)
C. \(V = \frac{{5\sqrt 2 }}{\pi }\)
D. \(V = \frac{{8\sqrt 3 }}{\pi }\)
A. \(\left\{ \begin{array}{l} x = 2 + t\\ y = 0\\ z = 1 + 2t \end{array} \right.\)
B. \(\left\{ \begin{array}{l} x = - 2 + 2t\\ y = t\\ z = - 1 - t \end{array} \right.\)
C. \(\left\{ \begin{array}{l} x = - 2 + 2t\\ y = - 2t\\ z = - 1 - t \end{array} \right.\)
D. \(\left\{ \begin{array}{l} x = - 2 + t\\ y = 0\\ z = - 1 + 2t \end{array} \right.\)
A. 4
B. 3
C. 5
D. 2
A. 8999
B. 2019
C. 1010
D. 7979
A. \(\frac{{2759}}{{15}}\)
B. \(\frac{{2744}}{{15}}\)
C. \(\frac{{5518}}{{15}}\)
D. \(\frac{{563}}{3}\)
A. 10
B. 2
C. 4
D. 7
A. 64
B. \(\frac{{32}}{3}\)
C. \(\frac{{128}}{3}\)
D. \(\frac{{64}}{3}\)
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