a |
b |
a |
3 |
4 |
a |
b |
b |
b |
q |
π |
2 |
p |
x |
2 |
b |
p |
b |
a |
b |
a |
b |
b |
a |
b |
3 |
4 |
| ||
2 |
a |
b |
| ||
2 |
2 |
b |
b |
b |
b |
b |
b |
q |
π |
2 |
b |
p |
x |
2 |
b |
p |
x |
2 |
b |
p |
(2sin
|
cos2x-4cosx+3 |
1 |
2 |
cos2x-4cosx+3 |
1 |
2 |
cos2x-4cosx+3 |
(cosx-2)2-1 |
1 |
2 |
| ||
2 |
|
ax2+ax+1 |
A.[0,4] | B.[0,4) | C.[4,+∞) | D.(0,4) |
x+1 |
x-1 |
A.最大值为3,最小值为
| B.最大值为3,无最小值 | ||
C.无最大值,最小值为
| D.最大值为4,最小值为2 |
| ||
x-3 |
4-x |
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