x2 |
a2 |
y2 |
b2 |
| ||
2 |
|PQ| |
|ST| |
c |
a |
| ||
2 |
a2-b2 |
a2 |
3 |
4 |
x2 |
4 |
|
5 |
5 |
8 |
5 |
4m2-4 |
5 |
2 |
(-
|
4
| ||
5 |
5-m2 |
5 |
2 |
|PQ| |
|ST| |
4 |
5 |
|
4 |
5 |
-
|
1 |
t |
3 |
4 |
4 |
3 |
5 |
3 |
5 |
|PQ| |
|ST| |
2 |
5 |
5 |
5 |
5 |
3 |
|PQ| |
|ST| |
2 |
5 |
5 |
2 |
|PQ| |
|ST| |
2 |
5 |
5-m2 |
|PQ| |
|ST| |
2 |
5 |
5 |
5 |
3 |
|PQ| |
|ST| |
2 |
5 |
5 |
OA |
OB |
OM |
OA |
OB |
A.2 | B.-2 | C.±2 | D.4 |
1 |
3 |
A.圆 | B.抛物线 | C.双曲线 | D.直线 |
PC |
CN |
PD |
DN |
2 |
2 |
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