A. \({\left( {x - 1} \right)^2} + {\left( {y - 2} \right)^2} + {z^2} = 16.\)
B. \({\left( {x - 1} \right)^2} + {\left( {y - 2} \right)^2} + {z^2} = 7.\)
C. \({\left( {x - 1} \right)^2} + {\left( {y - 2} \right)^2} + {z^2} = 25.\)
D. \({\left( {x - 1} \right)^2} + {\left( {y - 2} \right)^2} + {z^2} = 9.\)
A. \(\frac{{5 - 3{e^2}}}{4}.\)
B. \(\frac{{5 - 3{e^2}}}{2}.\)
C. \(\frac{{5 + 3{e^2}}}{4}.\)
D. \(\frac{{ - 5 - 3{e^2}}}{4}.\)
A. \(F\left( x \right) = x\cos x + \sin x + C.\)
B. \(F\left( x \right) = x\cos x - \sin x + C.\)
C. \(F\left( x \right) = - x\cos x - \sin x + C.\)
D. \(F\left( x \right) = - x\cos x + \sin x + C.\)
A. \(\frac{{20}}{3}.\)
B. \(\frac{{16}}{3}\)
C. 4
D. \(\frac{4}{3}\)
A. \(F\left( {2x - 3} \right) + C.\)
B. \(\frac{1}{2}F\left( {2x - 3} \right) + C.\)
C. \(\frac{1}{2}F\left( {2x} \right) - 3 + C.\)
D. \(F\left( {2x} \right) - 3 + C.\)
A. 10
B. \(2\sqrt 5 \)
C. 2
D. 20
A. 2x - 4y - z - 12 = 0
B. 2x - 3y + 4z - 12 = 0
C. 2x - 4y - z + 12 = 0
D. 2x - 3y + 4z + 12 = 0
A. 2019
B. -1
C. -2019
D. 1
A. 2
B. 1
C. 0
D. \(\sqrt 2 .\)
A. 125m
B. 75m
C. 200m
D. 100m
A. 3x + 14y + 4z - 5 = 0
B. 2x - y + 2z - 2 = 0
C. 2x - y + 2z + 2 = 0
D. 3x + 14y + 4z + 5 = 0
A. 112
B. 12
C. 56
D. 144
A. 4
B. 7
C. 5
D. 6
A. 2019
B. 0
C. 1
D. 2020
A. a = -1
B. a = 2
C. a = 0
D. a = 1
A. \(M\left( { - 2;3;0} \right).\)
B. \(M\left( {2;3;0} \right).\)
C. \(M\left( { - 2; - 3;0} \right).\)
D. \(M\left( {2; - 3;0} \right).\)
A. 2
B. -1
C. 1
D. -2
A. \(\frac{{x + 2}}{1} = \frac{{y - 2}}{7} = \frac{{z - 5}}{3}.\)
B. \(\frac{{x - 2}}{1} = \frac{{y - 4}}{7} = \frac{{z + 1}}{3}.\)
C. \(\frac{{x + 2}}{1} = \frac{{y + 4}}{7} = \frac{{z - 1}}{3}.\)
D. \(\frac{{x - 2}}{1} = \frac{{y + 2}}{7} = \frac{{z + 5}}{3}.\)
A. \(\frac{1}{3}.\)
B. 1
C. \(\frac{1}{2}.\)
D. \(\frac{1}{6}.\)
A. 13
B. 2
C. \(\sqrt {13} .\)
D. \(\sqrt 2 \)
A. \(6{{\rm{a}}^3}\)
B. \(18{{\rm{a}}^3}\)
C. \(9{{\rm{a}}^3}\)
D. \(3{{\rm{a}}^3}\)
A. \(\dfrac{1}{3}{R^2}h\)
B. \(\dfrac{\pi }{3}{R^2}h\)
C. \(\dfrac{4}{3}\pi {R^3}h\)
D. \(\dfrac{4}{3}\pi {R^2}h\)
A. \(r = \sqrt[3]{{12}}\)(cm)
B. \(r = 2\)(cm)
C. \(r = \sqrt {12} \)(cm)
D. \(r = 3\)(cm)
A. \(D = \left( { - \infty};2 \right)\)
B. \({\rm{D}} = \left( {2; + \infty } \right)\)
C. \(D = \mathbb{R}\backslash \left\{ 2 \right\}\)
D. \({\rm{D}} = \left( { - \infty ;2} \right]\)
A. \(I\left( {2;2} \right)\)
B. \(I\left( {1;1} \right)\)
C. \(I\left( {2;1} \right)\)
D. \(I\left( {1; - 1} \right)\)
A. x = -7
B. x = 5
C. x = 3
D. x = -5
A. \(\dfrac{{17}}{{12}}\)
B. \(\dfrac{1}{8}\)
C. \(\dfrac{4}{3}\)
D. \(\dfrac{3}{4}\)
A. x = 1
B. y = 1
C. y = -1
D. x = -1
A. \(y = {\left( {\dfrac{1}{2}} \right)^{ - x}}\)
B. \(y = {\left( {\dfrac{2}{e}} \right)^x}\)
C. \(y = {\left( {\sqrt 3 } \right)^x}\)
D. \(y = {\left( {\dfrac{\pi }{3}} \right)^x}\)
A. \({y_{C{\rm{D}}}} = 3\)
B. \({y_{C{\rm{D}}}} = - 1\)
C. \({y_{C{\rm{D}}}} = - 6\)
D. \({y_{C{\rm{D}}}} = 8\)
A. \( - \dfrac{{23}}{{27}}\)
B. 1
C. -2
D. \( - \dfrac{{32}}{{27}}\)
A. \(\dfrac{{{a^3}\sqrt 3 }}{{24}}\)
B. \(\dfrac{{{a^3}\sqrt 3 }}{4}\)
C. \(\dfrac{{{a^3}\sqrt 3 }}{{12}}\)
D. \(\dfrac{{{a^3}\sqrt 3 }}{6}\)
A. \(288\pi \)
B. \(96\pi \)
C. \(360\pi \)
D. \(120\pi \)
A. \(12\pi {a^3}\)
B. \(36\pi {a^3}\)
C. \(\dfrac{{100\pi {a^3}}}{3}\)
D. \(16\pi {a^3}\)
A. \(y = \dfrac{{3x + 10}}{{5x + 7}}\)
B. \(y = \dfrac{{ - x + 1}}{{5x - 3}}\)
C. \(y = \dfrac{{ - x - 8}}{{x + 3}}\)
D. \(y = \dfrac{{3x + 5}}{{x + 1}}\)
A. \(V = \dfrac{{2{{\rm{a}}^3}\sqrt 2 }}{3}\)
B. \(V = \dfrac{{4{{\rm{a}}^3}\sqrt 2 }}{3}\)
C. \(V = \dfrac{{4{{\rm{a}}^3}\sqrt 3 }}{3}\)
D. \(V = \dfrac{{2{{\rm{a}}^3}\sqrt 3 }}{3}\)
A. \(D = \mathbb{R}\backslash \left\{ { - 2} \right\}\)
B. \({\rm{D}} = \left( { - 2;3} \right)\)
C. \(D = \left( { - \infty ;2} \right) \cup \left[ {3; + \infty } \right)\)
D. \({\rm{D}} = \left( { - \infty ;2} \right) \cup \left( {3; + \infty } \right)\)
A. \(\dfrac{8}{3}\)
B. \(\dfrac{7}{3}\)
C. \(\dfrac{7}{2}\)
D. 4
A. \(1 \le x \le 3\)
B. \(\left[ \begin{array}{l}x \le 1\\x \ge 2\end{array} \right.\)
C. \(1 \le x \le 2\)
D. \(\left[ \begin{array}{l}x \le 1\\x \ge 3\end{array} \right.\)
A. \({e^2} + e - 4\)
B. \({e^4} - e\)
C. \({e^4} - e - 4\)
D. \({e^4} + e\)
A. \(A'\left( {3;7} \right)\)
B. \(A'\left( {3;1} \right)\)
C. \(A'\left( {4;7} \right)\)
D. \(A'\left( {1;6} \right)\)
A. \(x = \dfrac{\pi }{4} + k\pi ,k \in \mathbb{Z}\)
B. \(x = \dfrac{\pi }{2} + k2\pi ,k \in \mathbb{Z}\)
C. \(x = \dfrac{\pi }{2} + k\pi ,k \in \mathbb{Z}\)
D. \(x = k2\pi ,k \in \mathbb{Z}\)
A. \(\overrightarrow v = \left( {13; - 7} \right)\)
B. \(\overrightarrow v = \left( { - 13; - 7} \right)\)
C. \(\overrightarrow v = \left( { - 13;7} \right)\)
D. \(\overrightarrow v = \left( {13;7} \right)\)
A. 48
B. 24
C. 14
D. 18
A. \(x = k\pi ,k \in \mathbb{Z}\)
B. \(x = \dfrac{\pi }{6} + \dfrac{{k\pi }}{2},k \in \mathbb{Z}\)
C. \(x = \dfrac{\pi }{2} + k\pi ,k \in \mathbb{Z}\)
D. \(x = \dfrac{\pi }{3} + k\pi ,k \in \mathbb{Z}\)
A. \(M\left( { - 3;0} \right)\)
B. \(N\left( {3;3} \right)\)
C. \(P\left( {0; - 3} \right)\)
D. \(Q\left( {0;3} \right)\)
A. \(A'\left( { - 2; - 6} \right)\)
B. \(A'\left( { - 2;6} \right)\)
C. \(A'\left( {2;6} \right)\)
D. \(A'\left( {1;3} \right)\)
A. 17
B. 20
C. 10
D. 7
A. 2018
B. 2020
C. 2019
D. 2021
A. \(\overrightarrow {OM} = \dfrac{1}{k}\overrightarrow {OM'} \)
B. \(\overrightarrow {OM} = k\overrightarrow {OM'} \)
C. \(\overrightarrow {OM} = - k\overrightarrow {OM'} \)
D. \(\overrightarrow {OM} = - \dfrac{1}{k}\overrightarrow {OM'} \)
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