...
)3 ;1; 3(=b
;
)1; 0;2(=c
. d)
)2 ;1; 3( −−=a
;
)1; 1 ;1( =b
;
)1; 2;2(−=c
.
e)
) )1) (1( ,1, (
22
++−+= cbbccbp
;
) )1) (1( ,1, (
22
++−+= accaacq
;
) )1) (1( ,1, (
22
++−+= baabbar
14 . Cho 3 điểm
)0;0 ;1( A
;
)1; 0;0(B
; ...
)1; 1 ;1( A
;
)0 ;1; 1(−B
;
)1; 1;3( −C
.
13 . Xét sự đồng phẳng của ba vectơ sau:
a)
)1; 1 ;1( −=a
;
)2 ;1; 0(=b
;
)3;2;4(=c
. b)
)4;3;4(=a
;
)2 ;1; 2( −=b
;
)1; 2 ;1( =c
.
c)
)5;2;4(=a
;
)3 ;1; 3(=b
; ... -1) , C (1 ; -2, 3).
c) A( -1; 1; 2), B(3; -1; 0), C(2; 1; 1) . d) A(2; 1; 3), B( -1; -2; 4), C(4; 2; 1) .
e) A(2; -3; 1) , B(-2; 0; 5), C(3; 2; 0). f) A(2; -4; 0), B(5; 1; 7), C( -1; -1; -1) .
g)A (1;
Ngày tải lên :
10/07/2014, 07:00