PM |
PN |
-4-2 |
5-(-3) |
3 |
4 |
1 |
kMN |
4 |
3 |
4 |
3 |
PM |
PN |
PM |
PN |
4×1-3×(-1)-2 |
5 |
1 |
2 |
d |
r |
1 |
2 |
2π |
3 |
8π |
3 |
| ||
2πr |
2 |
3 |
OC |
1 |
3 |
OA |
2 |
3 |
OB |
|
| ||
|
|
π |
2 |
π |
2 |
OA |
OC |
2 |
3 |
AB |
1 |
2 |
AB |
AD |
CB |
CD |
AB |
DC |
A.平行四边形 | B.菱形 | C.长方形 | D.正方形 |
a |
b |
a |
b |
A.-
| B.
| C.-1 | D.1 |
a |
a |
b |
b |
b |
A.(2,
| B.(2,-
| C.(2,-
| D.(-2,
|
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