x2 |
a2 |
y2 |
b2 |
| ||
2 |
2 |
c |
a |
| ||
2 |
2 |
2 |
2 |
x2 |
8 |
y2 |
4 |
x2 |
4 |
y2 |
4 |
y0 |
x0+2 |
y0 |
x0-2 |
y02 |
x02-4 |
1 |
k |
8k2 |
2k2+1 |
8k2-8 |
2k2+1 |
1+k2 |
(x1+x2)2-4x1x2 |
4
| ||
2k2+1 |
4
| ||
k2+2 |
1 |
|AB| |
1 |
|CD| |
3(k2+1) | ||
4
|
3
| ||
8 |
3
| ||
8 |
x2 |
4 |
x2 |
a2 |
y2 |
b2 |
1 |
2 |
3 |
MP |
MQ |
x2 |
4 |
y2 |
2 |
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