Bài tập 2 trang 127 SGK Hình học 12 NC

A. \(x + 2y + 3z - 8 = 0.\)

B. \(3x + y - z - 4 = 0.\)

C. \(x + 2y + z - 6 = 0.\)

D. \(2x + 4y + 2z - 9 = 0.\)

A. \({\left( {x - 2} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z - 3} \right)^2} = 44.\)

B. \({\left( {x + 1} \right)^2} + {\left( {y - 3} \right)^2} + {z^2} = 44.\)

C. \({\left( {x + 1} \right)^2} + {\left( {y - 3} \right)^2} + {z^2} = 22.\)

D. \({\left( {x - 2} \right)^2} + {\left( {y - 1} \right)^2} + {\left( {z - 3} \right)^2} = 22.\)

A. \(\left( {5;27;3} \right)\).

B. \(\left( { - 1; - 2;5} \right).\)

C. \(\left( {0;27;3} \right)\).

D. \(( - 11; - 23; - 5).\)

A. \(\overrightarrow {{n_1}}  = \left( {2;6;4} \right).\)

B. \(\overrightarrow {{n_4}}  = \left( {2;6; - 4} \right).\) 

C. \(\overrightarrow {{n_3}}  = \left( {1; - 3; - 2} \right).\)

D. \(\overrightarrow {{n_2}}  = \left( {1; - 3;2} \right).\)

A. \(\overrightarrow {{u_1}}  = \left( { - 7;8;9} \right).\) 

B. \(\overrightarrow {{u_4}}  = \left( {7; - 8; - 9} \right).\)

C. \(\overrightarrow {{u_3}}  = \left( {2;2;3} \right).\)

D. \(\overrightarrow {{u_2}}  = \left( {2; - 2; - 3} \right).\)

A. \(\frac{{19}}{{21}} \cdot \)                                        B. \(\frac{{19\sqrt {21} }}{{21}} \cdot \)

C. \(\frac{{\sqrt {21} }}{{21}} \cdot \)                          D. \(\frac{{21}}{{19}} \cdot \)

A. \(\left( {3;\,3;\, - 1} \right)\).

B. \(\left( { - 1;\,3;\, - 3} \right)\).

C. \(\left( {3;\,1;\,1} \right)\).

D. \(\left( {1;\, - 3;\,3} \right)\).

A. \(S =  - \int\limits_a^b {f\left( x \right)\,{\rm{d}}x} .\)

B. \(S = \left| {\int\limits_a^b {f\left( x \right)\,{\rm{d}}x} } \right|.\)

C. \(S = \int\limits_a^b {\left| {f\left( x \right)} \right|\,{\rm{d}}x} .\)

D. \(S = \int\limits_a^b {\,f\left( x \right){\rm{d}}x} .\)

A. \(P\left( {2;0;3} \right).\)

B. \(N\left( {2; - 4;0} \right).\)

C. \(M\left( {0; - 4;3} \right).\)

D. \(Q\left( {0; - 4;0} \right).\)

A. \(\overrightarrow x  = (1; - 5;7).\)

B. \(\overrightarrow x  = (1;5;7).\)

C. \(\overrightarrow x  = (1;5; - 7).\)

D. \(\overrightarrow x  = (0; - 5;7).\)

A. \(\left\{ \begin{array}{l}x = 2 - 5t\\y = 0\\z =  - 3 + 3t.\end{array} \right.\)

B. \(\left\{ \begin{array}{l}x =  - 5 + 2t\\y = 4\\z = 3 - 3t.\end{array} \right.\)

C. \(\left\{ \begin{array}{l}x = 2 + 5t\\y = 4t\\z =  - 3 + 3t.\end{array} \right.\)

D. \(\left\{ \begin{array}{l}x = 2 - 5t\\y = 4t\\z =  - 3 + 3t.\end{array} \right.\)

A. \(\frac{x}{2} + \frac{y}{3} + \frac{z}{4} = 1.\)

B. \(\frac{x}{3} + \frac{y}{2} + \frac{z}{4} = 1.\)

C. \(\frac{x}{3} + \frac{y}{2} + \frac{z}{4} = 0.\)

D. \(\frac{x}{2} + \frac{y}{3} + \frac{z}{4} = 0.\)