A. \(x = 3,y = 1.\)
B. \(x = 1,y = 3.\)
C. \(x = - 1,y = 3.\)
D. \(x = 3,y = - 1.\)
A. \(x{e^x} + C.\)
B. \(\left( {x + 1} \right){e^x} + C.\)
C. \(\left( {x - 1} \right){e^x} + C.\)
D. \({x^2}{e^x} + C.\)
A. \(3x + 4y + 9z + 7 = 0.\)
B. \( - 3x - 4y - 9z + 7 = 0.\)
C. \(3x + 4y + 9z = 0.\)
D. \( - 3x - 4y - 9z + 5 = 0.\)
A. \(\overline z = - 1 + 4\sqrt 3 i\).
B. \(\overline z = - 1 - 4\sqrt 3 i\)
C. \(\overline z = 1 - 4\sqrt 3 i.\)
D. \(\overline z = 1 + 4\sqrt 3 i.\)
A. 1
B. 0
C. -1
D. -2
A. Gốc \(O\)
B. Điểm\(E\left( {1;1} \right)\).
C. Trục hoành.
D. Trục tung.
A. m = 0.
B. m = 1.
C. m = - 1.
D. m = 2.
A. -21
B. -3
C. 12
D. 9
A. \(\left| {\rm{w}} \right| = 2\sqrt {601} .\)
B. \(\left| {\rm{w}} \right| = 2\sqrt {610} .\)
C. \(\left| {\rm{w}} \right| = 2\sqrt {980} .\)
D. \(\left| {\rm{w}} \right| = 2\sqrt {890} .\)
A. 6
B. 9
C. 12
D. 3
A. \({\left( {x + 1} \right)^2} + {\left( {y - 2} \right)^2} + {\left( {z + 2} \right)^2} = 36.\)
B. \({\left( {x + 3} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z + 5} \right)^2} = 9.\)
C. \({\left( {x - 1} \right)^2} + {\left( {y + 2} \right)^2} + {\left( {z - 2} \right)^2} = 36.\)
D. \({\left( {x - 3} \right)^2} + {\left( {y + 1} \right)^2} + {\left( {z - 5} \right)^2} = 9.\)
A. M = 1 + i
B. M = -1 + i
C. M = 1 - i
D. M = - 1 - i
A. \(x\cos x - \sin x + C.\)
B. \(x\cos x + \sin x + C.\)
C. \(x\sin x + c{\rm{os}}x + C.\)
D. \(x\sin x - c{\rm{os}}x + C.\)
A. \(S = \frac{{468}}{7}.\)
B. \(S = \frac{{568}}{{11}}.\)
C. \(S = \frac{{468}}{{11}}.\)
D. \(S = \frac{{467}}{9}.\)
A. 4
B. 3
C. 0
D. 2
A. \(R = 3\sqrt 3 \)
B. \(R = 4\sqrt 3 \)
C. \(R = \sqrt 3 \)
D. \(R = 2\sqrt 3 \)
A. 5
B. 1
C. - 2
D. -3
A. 3e
B. 4e
C. e
D. 2e
A. 4y - z - 26 = 0
B. 4x - z - 14 = 0
C. 4x - y - 6 = 0
D. y - 4z - 14 = 0
A. \(S = \frac{9}{4}.\)
B. \(S = \frac{9}{2}.\)
C. \(S = \frac{{13}}{2}.\)
D. \(S = \frac{{13}}{4}.\)
A. \(d:\left\{ \begin{array}{l}x = 1 + 2t\\y = - 2 + 2t\\z = 3 + 3t\end{array} \right.\)
B. \(d:\left\{ \begin{array}{l}x = 3 + t\\y = - 2t\\z = 3t\end{array} \right.\)
C. \(d:\left\{ \begin{array}{l}x = 1 + 2t\\y = - 2 + 2t\\z = 3 - 3t\end{array} \right.\)
D. \(d:\left\{ \begin{array}{l}x = 2 + t\\y = 2 - 2t\\z = - 3 + 3t\end{array} \right.\)
A. a + b = c
B. a - b = c
C. a + b = 2c
D. a - b = 2c
A. \({x^2} + {y^2} + {z^2} \)\(+ 4x - 2xy + 6z + 5 = 0.\)
B. \(2{x^2} + 2{y^2} + 2{z^2} \)\(+ 2x + 5y + 6z + 2019 = 0.\)
C. \({x^2} + {y^2} + {z^2} \)\(+ 4x - 2yz - 1 = 0.\)
D. \(2{x^2} + 2{y^2} + 2{z^2} \)\(- 2x + 5y + 6z - 2019 = 0.\)
A. \(\left| z \right| = 4.\)
B. \(\overline z = 2 + 2\sqrt 3 i\)
C. \(z = {\left( {\sqrt 3 - i} \right)^2}\)
D. \({z^3} = 64\)
A. \(V = \frac{{33\pi }}{5}\)
B. \(V = \frac{{33}}{5}\)
C. \(V = \frac{{29\pi }}{4}\)
D. \(V = \frac{{29}}{4}\)
A. 118i
B. 118
C. -148
D. -148i
A. \(V = \frac{3}{{10}}\)
B. \(V = \frac{{3\pi }}{{10}}\)
C. \(V = \frac{{10\pi }}{3}\)
D. \(V = \frac{{10}}{3}\)
A. \(3x - 11y + 9z - 1 = 0.\)
B. \(3x + 3y - z - 5 = 0\)
C. \(3x + 11y - 9z - 5 = 0\)
D. \(9x + y - 10z = 0\)
A. 3
B. 4
C. 7
D. 10
A. \({z_1} = 2 + \sqrt 2 i;\,\,{z_2} = 2 - \sqrt 2 i\)
B. \({z_1} = - 1 + \sqrt 2 i;\,\,{z_2} = - 1 - \sqrt 2 i\)
C. \({z_1} = - 2 + \sqrt 2 i;\,\,{z_2} = - 2 - \sqrt 2 i\)
D. \({z_1} = 1 + \sqrt 2 i;\,\,{z_2} = 1 - \sqrt 2 i\)
A. m = 0
B. \(m = \frac{1}{2}.\)
C. m = -1
D. \(m = - \frac{3}{2}.\)
A. \(S = \frac{{32}}{3}.\)
B. \(S = \frac{{33}}{2}.\)
C. \(S = \frac{{23}}{2}.\)
D. \(S = \frac{{22}}{3}.\)
A. \(H\left( {1; - 3; - 2} \right)\)
B. \(H\left( {3;1;4} \right)\)
C. \(H\left( {2; - 1;1} \right)\)
D. \(H\left( {4;3;7} \right)\)
A. Một đường thẳng.
B. Một đường tròn.
C. Một Parabol.
D. Một Elip.
A. \(\left\{ \begin{array}{l}x = 1 - 3t\\y = 3 + 3t\\z = 4 - 5t\end{array} \right.\)
B. \(\left\{ \begin{array}{l}x = - 3 + t\\y = 3 + 3t\\z = - 5 + 4t\end{array} \right.\)
C. \(\left\{ \begin{array}{l}x = 1 + 3t\\y = 3 - 3t\\z = 4 + 5t\end{array} \right.\)
D. \(\left\{ \begin{array}{l}x = 3 + t\\y = - 3 + 3t\\z = 5 + 4t\end{array} \right.\)
A. \(S = \frac{{11}}{2}.\)
B. \(S = \frac{{11}}{3}.\)
C. \(S = \frac{{13}}{2}.\)
D. \(S = \frac{{13}}{3}.\)
A. \(\sqrt 2 \)
B. \(2\sqrt 2 \)
C. \(\frac{{\sqrt 2 }}{2}\)
D. \(\frac{{\sqrt 3 }}{2}\)
A. V = 4.
B. V = 9.
C. \(V = 4\pi .\)
D. \(V = 9\pi .\)
A. -8
B. -8i
C. -10
D. -10i
A. 4
B. 9
C. 12
D. 15
A. \(\left\{ \begin{array}{l}x = 1 + 3t\\y = 1 - t\\z = - 5 + 5t\end{array} \right.\)
B. \(\left\{ \begin{array}{l}x = 3 - 3t\\y = t\\z = - 2 - 5t\end{array} \right.\)
C. \(\left\{ \begin{array}{l}x = 3 + 3t\\y = t\\z = - 2 + 5t\end{array} \right.\)
D. \(\left\{ \begin{array}{l}x = 3t\\y = 1 + t\\z = - 7 + 5t\end{array} \right.\)
A. \(\ln \left| {\cos x} \right| + C\)
B. \(\ln \left| {\sin x} \right| + C\)
C. \(\sin x + C\)
D. \(\tan x + C\)
A. \(\tan x + x + C.\)
B. \( - \tan x - x + C.\)
C. \(\tan x - x + C.\)
D. \( - \tan x + x + C.\)
A. \(I\left( { - 2;1; - 3} \right),R = 3\)
B. \(I\left( {2; - 1;3} \right),R = 3\)
C. \(I\left( {4; - 2;6} \right),R = 5\)
D. \(I\left( { - 4;2; - 6} \right),R = 5\)
A. 0
B. \(3\sqrt 2 \)
C. \(2\sqrt 2 \)
D. 1
A. 1
B. 2
C. 3
D. 4
A. \({\left( {x + 1} \right)^2} + {\left( {y + 1} \right)^2} + {\left( {z + 1} \right)^2} = 6.\)
B. \({\left( {x + 1} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z + 1} \right)^2} = 6.\)
C. \({\left( {x - 1} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z + 1} \right)^2} = 6.\)
D. \({\left( {x + 1} \right)^2} + {\left( {y + 1} \right)^2} + {\left( {z - 1} \right)^2} = 6.\)
A. 2
B. 4
C. 1
D. 3
A. \(m = \pm 1.\)
B. \(m = \pm 2.\)
C. \(m = \pm 3.\)
D. \(m = \pm 4.\)
A. 1
B. 5
C. 3
D. 4
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