y2 |
16 |
x2 |
4 |
QA |
QB |
x2 |
a2 |
y2 |
b2 |
y2 |
16 |
x2 |
4 |
| ||
2 |
3 |
a2-c2 |
x2 |
4 |
16k2-4 |
1+4k2 |
-8k2+2 |
1+4k2 |
4k |
1+4k2 |
8k2 |
1+4k2 |
2k |
1+4k2 |
QA |
QB |
QA |
QB |
2 |
2k |
1+4k2 |
1 |
k |
8k2 |
1+4k2 |
6k |
1+4k2 |
QA |
QB |
QA |
QB |
-8k2+2 |
1+4k2 |
6k |
1+4k2 |
4k |
1+4k2 |
6k |
1+4k2 |
| ||
7 |
| ||
7 |
5 |
x2 |
a12 |
y2 |
b12 |
x2 |
a22 |
y2 |
b22 |
a1 |
a2 |
b1 |
b2 |
A.②③④ | B.①③④ | C.①②④ | D.①②③ |
x2 |
a2 |
y2 |
b2 |
1 |
4 |
A.
| B.
| C.
| D.
|
x2 |
4 |
A.16 | B.2 | C.8 | D.4 |
x2 |
4 |
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