π |
3 |
π |
12 |
π |
3 |
2π |
3 |
-2
| ||
5 |
| ||
5 |
π |
12 |
π |
12 |
π |
4 |
| ||
2 |
| ||
2 |
-
| ||
5 |
| ||
10 |
| ||
10 |
5π |
6 |
A.∃x∈R,sin2
| ||||||
B.∀x∈(0,π),sinx>cosx | ||||||
C.∃x∈R,x2+x=-1 | ||||||
D.∀x∈(0,+∞),ex>1+x |
A.f(x)是偶函数且在(0,+∞)上单调递减 |
B.f(x)是偶函数且在(0,+∞)上单调递增 |
C.f(x)是奇函数且单调递减 |
D.f(x)是奇函数且单调递增 |
A.2 | B.3 | C.6 | D.9 |
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