a |
b |
a |
b |
a |
b |
π |
20 |
a |
b |
a |
cos2λθ+cos2(10-λ)θ |
b |
sin2(10-λ)θ+sin2λθ |
a |
b |
a |
b |
kπ |
10 |
π |
20 |
λπ |
20 |
λπ |
20 |
π |
2 |
λπ |
20 |
π |
2 |
λπ |
20 |
λπ |
20 |
λπ |
20 |
λπ |
20 |
λπ |
20 |
a |
b |
PM |
PN |
3 |
AP |
AB |
AC |
A.最大值为16 | B.最小值为4 |
C.为定值8 | D.与P的位置有关 |
MA |
MB |
1 |
2 |
OM |
OA |
OB |
MP |
BD |
BA |
CE |
CA |
CD |
BE |
A.-
| B.-
| C.-
| D.-
|
a |
b |
a |
b |
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