2 |
2 |
PE |
PF |
PM |
2 |
MQ |
EP |
2 |
FP |
2 |
EP |
FP |
x | 20 |
y | 20 |
x | 20 |
y | 20 |
x | 20 |
y | 20 |
PM |
MQ |
PM |
2 |
MQ |
|
|
x2 |
2 |
|
4kt |
1+2k2 |
2t2-2 |
1+2k2 |
(1+k2)[(x1+x2)2-4x1x2] |
-4kt |
1+2k2 |
2t2-2 |
1+2k2 |
1+2k2 |
2(1+k2) |
|t| | ||
|
t2 |
1+k2 |
1+2k2 |
2(1+k2)2 |
2 | ||
(1+2k2)+
|
2 |
2+2 |
1 |
2 |
1 |
1+2k2 |
1 |
2 |
1 |
2 |
| ||
2 |
| ||
2 |
| ||
2 |
3 |
4 |
3 |
2 |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
OG |
OH |
Om |
mG |
mH |
2
| ||
3 |
x2 |
a2 |
y2 |
b2 |
| ||
2 |
|PQ| |
|MN| |
x2 |
a2 |
y2 |
b2 |
|PQ| |
|QB| |
x2 |
a2 |
y2 |
b2 |
1 |
2 |
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