m-2sinx |
cosx |
π |
2 |
π |
2 |
π |
2 |
m-2sinx1 |
cosx1 |
m-2sinx2 |
cosx2 |
π |
2 |
2sin(x1-x2) |
cosx2-cosx1 |
2sin(x1-x2) |
cosx2-cosx1 |
π |
2 |
2sin(x1-x2) |
cosx2-cosx1 |
4sin
| ||||
2sin
|
2cos
| ||
sin
|
2(cos
| ||||||||
sin
|
2(1+tan
| ||||
tan
|
π |
2 |
x1 |
2 |
x2 |
2 |
π |
4 |
x1 |
2 |
x2 |
2 |
x1 |
2 |
x2 |
2 |
x1 |
2 |
x2 |
2 |
x1 |
2 |
x2 |
2 |
2(1+tan
| ||||
tan
|
| ||||||
n |
n+2 |
2 |
15 |
8b1 |
x |
a |
b |
x |
x |
a |
b |
x |
3 |
2 |
A.-1 | B.0 | C.1 | D.2 |
1+x |
1-x |
A.关于原点对称 | B.关于主线y=-x对称 |
C.关于y轴对称 | D.关于直线y=x对称 |
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