AB |
AC |
BD |
DC |
AI |
BC |
AC |
AD |
1 |
3 |
AB |
2 |
3 |
AC |
BA |
BD |
AI |
ID |
4 |
2 |
AI |
2 |
3 |
AD |
2 |
9 |
AB |
4 |
9 |
AC |
AI |
BC |
AC |
AC |
AB |
AC |
AB |
AC |
|
|
m |
n |
| ||
2 |
| ||
2 |
m |
n |
m |
n |
m |
n |
3 |
5 |
3π |
4 |
AB |
AP |
A.(3,1) | B.(1,-1) | C.(3,1)或(1,-1) | D.(3,1)或(1,1) |
21 |
OM |
OA |
OB |
OM |
OA |
OC |
AB |
OM |
AM |
CM |
BM |
1 |
2 |
OM |
AM |
a |
b |
a |
b |
a |
b |
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