Phát biểu nào sau đây sai:

A. \[\forall {\rm{m}} \in {\rm{R}}\]

B. Không tồn tại m

C. \[{\rm{m}} \ne 0 \wedge {\rm{m}} \ne 1 \wedge {\rm{m}} \ne - 1\]

D. \[{\rm{m}} \ne 0 \vee {\rm{m}} \ne 1 \vee {\rm{m}} \ne - 1\]

A. x = (1, 0, 2 )

B. x = (1, 0, 0 )

C. x = (0, 0, 0 )

D. x = (0,1, 0 )

A. \[\left\{ {(1,1,0),( - 1,0,1)} \right\}\]

B. \[\left\{ {(1,1,0),(0,0,1)} \right\}\]

C. \[\left\{ {(1,1,0),(0,1,0)} \right\}\]

D. \[\left\{ {(1,0, - 1),(0,1, - 1)} \right\}\]

A. m = 0

B. m = -1

C. m = 2

D. Đáp án khác

A. 1

B. 2

C. 3

D. 4

A. 1

B. 2

C. 3

D. 4

A. \[{\rm{W}} = \left\{ {({{\rm{x}}_{\rm{1}}}{\rm{,}}{{\rm{x}}_{\rm{2}}}{\rm{,}}{{\rm{x}}_{\rm{3}}}{\rm{/}}{{\rm{x}}_{\rm{1}}} = 0} \right\} \subset {{\rm{R}}^3}\]

B. \[{\rm{W}} = \left\{ {({{\rm{x}}_{\rm{1}}}{\rm{,}}{{\rm{x}}_{\rm{2}}}{\rm{,}}{{\rm{x}}_{\rm{3}}}{\rm{/}}{{\rm{x}}_{\rm{1}}} = 1} \right\} \subset {{\rm{R}}^3}\]

C. \[{\rm{W}} = \left\{ {({{\rm{x}}_{\rm{1}}}{\rm{,}}{{\rm{x}}_{\rm{2}}}{\rm{,}}{{\rm{x}}_{\rm{3}}}{\rm{/}}{{\rm{x}}_{\rm{1}}}{\rm{ + }}{{\rm{x}}_{\rm{2}}} = 1} \right\} \subset {{\rm{R}}^3}\]

D. \[{\rm{W}} = \left\{ {({{\rm{x}}_{\rm{1}}}{\rm{,}}{{\rm{x}}_{\rm{2}}}{\rm{,}}{{\rm{x}}_{\rm{3}}}{\rm{/}}{{\rm{x}}_{\rm{2}}} = 3} \right\} \subset {{\rm{R}}^{\rm{3}}}\]