AB |
3 |
AC |
AB |
AC |
AB |
AC |
BC |
AB |
AC |
3 |
3 |
1-cos2x |
2 |
sin2x |
2 |
π |
3 |
| ||
2 |
π |
3 |
| ||
2 |
π |
3 |
π |
3 |
π |
3 |
π |
6 |
AB |
AC |
BC |
AB |
4sin2x |
AC |
AB2-AC2 |
3 |
1 |
2 |
| ||
2 |
| ||
2 |
a |
b |
a |
b |
A.λ∈(0,
| B.λ∈(-
| ||||||
C.λ∈(-∞,0)∪(
| D.λ∈(-∞,-
|
AD |
AC |
A.0 | B.4 | C.8 | D.-4 |
a |
1 |
2 |
| ||
2 |
b |
a |
b |
| ||
2 |
b |
BC |
2 |
CA |
AB |
3 |
2 |
BP |
CQ |
a |
b |
a |
b |
a |
b |
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