OM |
OB |
OA |
A.点M在线段AB上 | B.点B在线段AM上 |
C.点A在线段BM上 | D.O、A、M、B四点一定共线 |
OM |
OB |
OA |
OM |
OA |
OB |
OA |
AM |
AB |
AM |
AB |
e1 |
e2 |
e1 |
3e2 |
e1 |
e2 |
A.k=4 | B.k=-4 | C.k=-9 | D.k=9 |
a |
b |
AB |
a |
b |
BC |
a |
b |
CD |
a |
b |
A.1 | B.2 | C.-2 | D.-1 |
a |
b |
a |
a |
b |
a |
b |
A.[0,
| B.[
| C.[
| D.[
|
OM |
OA |
OB |
MN |
AP |
AB |
OP |
AB |
PA |
PB |
A.
| B.1-
| ||||||||||||||
C.
| D.1-
|
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