MN |
MP |
PN |
18 |
7 |
NA |
NB |
12 |
5 |
MP |
MN |
PN |
(1-x)2+(-y)2 |
x2 |
4 |
y2 |
3 |
x2 |
4 |
y2 |
3 |
|
|
NA |
NB |
4k2-12-8k2+3+4k2 |
3+4k2 |
-9(1+k2) |
3+4k2 |
18 |
7 |
-9(1+k2) |
3+4k2 |
12 |
5 |
3 |
3 |
π |
4 |
π |
4 |
A.圆 | ||
B.以点C为圆心,半径等于1的圆 | ||
C.满足方程x2+y2=1的曲线 | ||
D.满足(x-1)2+(y-2)2=
|
OA |
AB |
PA |
PB |
PA |
PB |
NQ |
4 |
3 |
QM |
OA |
OB |
|
OP |
AP |
2 |
3 |
2 |
3 |
1 |
3 |
2 |
3 |
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