AP |
AD |
AB |
2 | ||
|
| ||
5 |
2 |
5 |
AP |
AD |
AB |
2 |
5 |
5 |
3 |
5 |
3 |
a |
b |
a |
a |
b |
a |
b |
a |
b |
a |
b |
OA |
a |
OB |
b |
OC |
c |
a |
b |
c |
a |
b |
c |
a |
b |
c |
AB |
a |
AD |
b |
MN |
a |
b |
n |
m |
A.-
| B.-4 | C.
| D.4 |
a |
b |
a |
b |
A.2
| B.2或2
| C.-2或0 | D.2或10 |
OP |
OA |
OB |
A.点P一定在直线AB上 | ||||
B.点P一定不在直线AB上 | ||||
C.点P可能在直线AB上,也可能不在直线AB上 | ||||
D.
|
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