A. \(S=1\)
B. \(S=\frac{1}{2}\)
C. \(S=\sqrt{3}\)
D. \(S=\sqrt{2}\)
A. 1
B. \(\frac{1}{6}\)
C. \(\frac{1}{3}\)
D. \(\frac{1}{2}\)
A. 2x - y + 3z + 7 = 0
B. 2x + y - 3z + 7 = 0
C. 2x + y + 3z + 7 = 0
D. 2x - y + 3z - 7 = 0
A. x + y - z = 0
B. 2y - z + 1 = 0
C. y - 2z + 2 = 0
D. x + 2z - 3 = 0
A. \(\left( P \right):\frac{x}{3} + \frac{y}{6} + \frac{z}{9} = 1\)
B. \(\left( P \right):x + \frac{y}{2} + \frac{z}{3} = 3\)
C. \(\left( P \right):x + y + z - 6 = 0\)
D. \(\left( P \right):x + 2y + 3{\rm{z}} - 14 = 0\)
A.
\(y - 3z + 4 = 0\)
B. \(y - 3z - 8 = 0\)
C. \(y - 2z -6 = 0\)
D. \(y - 2z + 2 = 0\)
A. \(4x + 3y - 12z + 78 = 0\)
B. \(4x + 3y - 12z + 26 = 0\) hoặc \(4x + 3y - 12z - 78 = 0\)
C. \(4x + 3y - 12z - 26 = 0\)
D. \(4x + 3y - 12z - 26 = 0\) hoặc \(4x + 3y - 12z + 78 = 0\)
A. \(n=m=-4\)
B. \(n=-4; m=4\)
C. \(n=m=4\)
D. \(n=4;m=-4\)
A. V=78
B. V=120
C. V=91
D. V=150
A. \(d\left( {A,\left( {SMN} \right)} \right) = 4\)
B. \(d\left( {A,\left( {SMN} \right)} \right) = 2\)
C. \(d\left( {A,\left( {SMN} \right)} \right) = \sqrt 2\)
D. \(d\left( {A,\left( {SMN} \right)} \right) = 1\)
A. \(2{\rm{x}} + y - 2{\rm{z}} + 1 = 0\)
B. \(2{\rm{x}} + y - 2{\rm{z}} + 2 = 0\)
C. \(2{\rm{x}} + y - 2{\rm{z}} - 2 = 0\)
D. \(2{\rm{x}} + y + 2{\rm{z}} + 2 = 0\)
A. \(\left( \Delta \right):\left\{ \begin{array}{l} x = 1 - 2t\\ y = 2 - 2t\\ z = 3 + 3t \end{array} \right.\)
B. \(\left( \Delta \right):\left\{ \begin{array}{l} x = - 2t\\ y = 2 - 2t\\ z = 3 - 3t \end{array} \right.\)
C. \(\left( \Delta \right):\left\{ \begin{array}{l} x = 1 - 2t\\ y = 2 - 2t\\ z = 3 - 3t \end{array} \right.\)
D. \(\left( \Delta \right):\left\{ \begin{array}{l} x = 1 - 2t\\ y = 2 + 2t\\ z = 3 - 3t \end{array} \right.\)
A. \(A'\left( {0;0;\sqrt 3 } \right)\)
B. \(A'\left( {0;0;\sqrt 5 } \right)\)
C. \(A'\left( {0;0;\sqrt 6 } \right)\)
D. \(A'\left( {0;0;\sqrt 2 } \right)\)
A. \(\left[ \begin{array}{l} M\left( {1; - 5;7} \right)\\ M\left( {\frac{5}{7};6;9} \right) \end{array} \right.\)
B. \(\left[ \begin{array}{l} M\left( {3;0;2} \right)\\ M\left( {\frac{7}{{17}};\frac{{66}}{{17}};\frac{{ - 10}}{{17}}} \right) \end{array} \right.\)
C. \(\left[ \begin{array}{l} M\left( {1;5;7} \right)\\ M\left( {\frac{5}{7};6;9} \right) \end{array} \right.\)
D. \(\left[ \begin{array}{l} M\left( {1; - 5;7} \right)\\ M\left( {\frac{5}{7};6;4} \right) \end{array} \right.\)
A. \(M\left( {1;2;4} \right);M\left( {\frac{6}{7};\frac{{17}}{7};\frac{{ - 1}}{7}} \right)\)
B. \(M\left( {1;2;4} \right);M\left( {\frac{6}{7};\frac{{17}}{7};\frac{{30}}{7}} \right)\)
C. \(M\left( {1;2;4} \right);M\left( {\frac{6}{7};\frac{{17}}{7};\frac{3}{7}} \right)\)
D. \(M\left( {1;2;4} \right);M\left( {\frac{6}{7};\frac{{17}}{7};\frac{1}{7}} \right)\)
A. \(\left( \alpha \right):2x + 2y - z = 0\)
B. \(\left( \alpha \right):2x + 2y - z + 1 = 0\)
C. \(\left( \alpha \right):2x + 2y - z + 2 = 0\)
D. \(\left( \alpha \right):2x + 2y - z + 3 = 0\)
A. \(H\left( {\frac{3}{7};\frac{5}{7};\frac{1}{7}} \right)\)
B. \(H\left( {\frac{3}{7};\frac{5}{7};\frac{3}{7}} \right)\)
C. \(H\left( {\frac{3}{7};\frac{5}{7};\frac{8}{7}} \right)\)
D. \(H\left( {\frac{3}{7};\frac{5}{7};\frac{{13}}{7}} \right)\)
A. \(\frac{{5\sqrt 6 }}{2}\)
B. \(\frac{{5\sqrt 7 }}{3}\)
C. \(\frac{5}{3}\)
D. \(\frac{{5\sqrt 6 }}{3}\)
A. \( - 2{\rm{x}} + y + 3{\rm{z}} - 1 = 0\)
B. \( - 2x + y + 3z - 8 = 0\)
C. \( - 2x + y + 3z - 11 = 0\)
D. \( - 2x + y + 3z - 18 = 0\)
A. \(B\left( { - 7;4;5} \right);B\left( { - \frac{{13}}{7};\frac{{10}}{7}; - \frac{{12}}{7}} \right)\)
B. \(B\left( { - 7;4;2} \right);B\left( { - \frac{{13}}{7};\frac{{10}}{7}; - \frac{{12}}{7}} \right)\)
C. \(B\left( { - 7;4;1} \right);B\left( { - \frac{{13}}{7};\frac{{10}}{7}; - \frac{{12}}{7}} \right)\)
D. \(B\left( { - 7;4;6} \right);B\left( { - \frac{{13}}{7};\frac{{10}}{7}; - \frac{{12}}{7}} \right)\)
A. 2x - y - 3z - 8 = 0
B. x - 2z - 8 = 0
C. x - 2z - 8 = 0
D. 2x - y - 3z + 6 = 0
A. x + y + z = 0
B. x + y - z = 0
C. x - y + z = 0
D. -x + y + z = 0
A. x + y - 3 = 0
B. x - y - 1 = 0
C. 2x + y - 3z - 1 = 0
D. x - y + 1 = 0
A. x - y - 1 = 0
B. x - y + 1 = 0
C. x + z - 2 = 0
D. x + y - 1 = 0
A. m=0
B. m=2
C. m=0 hoặc m=2
D. m=1
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