a |
b |
m |
a |
b |
n |
a |
b |
m |
n |
-3ak2+(a2+4)k |
k4+6k2+1 |
a |
b |
a |
b |
a |
b |
m |
n |
a |
b |
a |
b |
a |
a |
b |
b |
m |
a |
b |
n |
1+k2 |
| ||||
|
|
2k |
1+k2 |
2k |
1+k2 |
1 |
2 |
3 |
2k |
1+k2 |
2×
| ||
1+(
|
4k(1+k2) |
1+6k2+k4 |
-3ak2+(4+a2)k |
1+6k2+k4 |
a |
4 |
a |
4 |
a |
4 |
3 |
AB |
BC |
AB |
BC |
AB |
BC |
A.19 | B.-14 | C.-18 | D.-19 |
AB |
DC |
AB |
AD |
a |
b |
a |
b |
a |
b |
b |
a |
CD |
1 |
2 |
CA |
CB |
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