A. \(\sqrt {41} .\)
B. 7
C. 49
D. \(\sqrt 7 .\)
A. \(F\left( x \right) = 10{\left( {2x + 3} \right)^4} + C.\)
B. \(F\left( x \right) = 5{\left( {2x + 3} \right)^4} + C.\)
C. \(F\left( x \right) = \frac{{{{\left( {2x + 3} \right)}^6}}}{{12}} + C.\)
D. \(F\left( x \right) = \frac{{{{\left( {2x + 3} \right)}^6}}}{6} + C.\)
A. (2;- 1)
B. (2;1)
C. (1;2)
D. (- 2;1)
A. \(z = \frac{{14}}{5} + \frac{8}{5}i.\)
B. \(z=4-2i\)
C. \(z = 4 + 2i.\)
D. \(z = \frac{{14}}{5} - \frac{8}{5}i.\)
A. \(\int_a^b {\left| {f\left( x \right) + g\left( x \right)} \right|} {\mathop{\rm d}\nolimits} x.\)
B. \(\int_a^b {\left| {f\left( x \right) - g\left( x \right)} \right|} {\mathop{\rm d}\nolimits} x.\)
C. \(\int_a^b {\left[ {f\left( x \right) + g\left( x \right)} \right]} {\mathop{\rm d}\nolimits} x.\)
D. \(\left| {\int_a^b {\left[ {f\left( x \right) + g\left( x \right)} \right]dx} } \right|.\)
A. \(\frac{{{e^2} + 1}}{2}.\)
B. \( \frac{1}{2}.\)
C. \( - \frac{1}{2}.\)
D. \(\frac{{{e^2} - 1}}{2}.\)
A. \({\left( {x + 1} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z + 2} \right)^2} = 25.\)
B. \({\left( {x + 1} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z + 2} \right)^2} = 5.\)
C. \({\left( {x - 2} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z - 2} \right)^2} = 25.\)
D. \({\left( {x - 1} \right)^2} + {\left( {y + 1} \right)^2} + {\left( {z - 2} \right)^2} = 25.\)
A. 6
B. 12
C. 9
D. 5
A. \(\overrightarrow n = \left( {2; - 1;1} \right).\)
B. \(\overrightarrow n = \left( {2;0; - 1} \right).\)
C. \(\overrightarrow n = \left( {2;0;1} \right).\)
D. \(\overrightarrow n = \left( {2;1; - 1} \right).\)
A. \(\frac{7}{3}.\)
B. \(\frac{2}{3}.\)
C. \(\frac{3}{2}.\)
D. \(\frac{1}{3}.\)
A. 1
B. 9
C. 5
D. - 3
A. m = 5
B. m = 1
C. \(m = \frac{7}{2}.\)
D. m = 2
A. (2;2;6)
B. (0;- 4;- 4)
C. (0;- 2;- 2)
D. (1;1;3)
A. \({z^2} - 3z - 4 = 0\)
B. \({z^2} + 3z + 4 = 0\)
C. \({z^2} - 3z + 4 = 0\)
D. \({z^2} + 3z - 4 = 0\)
A. \(F\left( x \right) = - \frac{1}{2}cos2x + C.\)
B. \(F\left( x \right) = - cos2x + C.\)
C. \(F\left( x \right) = - 2cos2x + C.\)
D. \(F\left( x \right) = \frac{1}{2}cos2x + C.\)
A.
\(\left\{ \begin{array}{l}
x = 2 + 2t\\
y = - 3t\\
z = - 1 + t
\end{array} \right..\)
B.
\(\left\{ \begin{array}{l}
x = 4 + 2t\\
y = - 6\\
z = 2 - t
\end{array} \right..\)
C.
\(\left\{ \begin{array}{l}
x = - 2 + 2t\\
y = - 3t\\
z = 1 + t
\end{array} \right..\)
D.
\(\left\{ \begin{array}{l}
x = - 2 + 4t\\
y = - 6t\\
z = 1 + 2t
\end{array} \right..\)
A. \(\frac{{2\pi }}{3}.\)
B. \(\frac{{4\pi }}{3}.\)
C. \(\frac{{8\pi }}{{15}}.\)
D. \(\frac{{16\pi }}{{15}}.\)
A. - 9
B. 9
C. 1
D. 7
A. 1
B. \(\frac{{11}}{3}.\)
C. 3
D. \(\frac{1}{3}.\)
A. I(- 4;1;0) và R = 4
B. I(8;- 2;0) và \(R = 2\sqrt 7 .\)
C. I(4;- 1;0) và R = 4
D. I(4;- 1;0) và R = 16
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. \(F\left( x \right) = x{\rm{cos}}x + \sin x + C.\)
B. \(F\left( x \right) = x{\rm{cos}}x - \sin x + C.\)
C. \(F\left( x \right) = - x{\rm{cos}}x - \sin x + C.\)
D. \(F\left( x \right) = - x{\rm{cos}}x + \sin x + C.\)
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. \(2F\left( x \right) - 3 + C.\)
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. \(z=2+i\)
B. \(z=1-2i\)
C. \(z=-2-i\)
D. \(z=-2+i\)
A. \(\frac{2}{5}.\)
B. \(\frac{1}{5}.\)
C. \(-\frac{2}{5}.\)
D. \(-\frac{1}{5}.\)
A. 18
B. 14
C. 15
D. 10
A. \(\left( { - 9;12;0} \right).\)
B. \(\left( {9; - 12;0} \right).\)
C. \(\left( {0;9; - 12} \right).\)
D. \(\left( {0; - 9;12} \right).\)
A. - 1
B. 1
C. 3
D. - 3
A. \(f\left( 0 \right) > f\left( 2 \right) > f\left( { - 1} \right).\)
B. \(f\left( 0 \right) > f\left( { - 1} \right) > f\left( 2 \right).\)
C. \(f\left( 2 \right) > f\left( 0 \right) > f\left( { - 1} \right).\)
D. \(f\left( { - 1} \right) > f\left( 0 \right) > f\left( 2 \right).\)
A. \(\frac{4}{3}.\)
B. \(\frac{{32}}{3}.\)
C. \(\frac{{8}}{3}.\)
D. 1
A. \(\frac{3}{2}.\)
B. 3
C. \(\frac{1}{2}.\)
D. 2
A. - 1
B. 12
C. 7
D. 5
A. m = 12
B. m = - 12
C. m = - 10
D. m = 5
A. 125 m
B. 75 m
C. 200 m
D. 100 m
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(2;3;0)
C. M(- 2;- 3;0)
D. M(2; - 3;0)
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. \(\sqrt 2 .\)
Lời giải có ở chi tiết câu hỏi nhé! (click chuột vào câu hỏi).
Copyright © 2021 HOCTAPSGK