向量数乘运算及几何意义
AC |
AB |
AD |
A.![]() |
B.![]() |
C.±![]() |
D.±![]() |
AD |
DB |
CD |
1 |
3 |
CA |
CB |
a |
b |
b |
a |
b |
AD |
DB |
CD |
CA |
CB |
λ |
μ |
A.![]() ![]() ![]() ![]() |
B.![]() ![]() ![]() ![]() |
C. |
D.![]() ![]() ![]() ![]() |
AG |
GD |
A.![]() |
B.![]() |
C.![]() |
D.![]() |
A.3 |
B.![]() |
C.2 |
D.![]() |
5 |
e |
e |
OP |
ae |
be2 |
3 |
2 |
MA |
1 |
2 |
MB |
A.-1 | B.0 |
C.![]() |
D.![]() |
AD |
BC |
MN |
1 |
2 |
MP |
OP |
MN |
OA |
OB |
OC |
OG |
a |
b |
c |
a |
b |
a |
b |
a |
b |
c |
d |
a |
b |
d |
c |
PN |
PM |