1 |
x2 |
1 |
x2 |
|
a |
x2 |
2 |
x2 |
1 |
x2 |
2 |
x2 |
2 |
x2 |
1 |
x2 |
4 |
x2 |
1 |
x2 |
2 |
x2 |
A.-1 | B.1 | C.0 | D.1000 |
1 |
2 |
m |
1-m |
A.(0,1) | B.(1,2) | C.(-∞,1)∪(2,+∞) | D.(-∞,0)∪(1,+∞) |
A.若
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B.函数y=arccosx(-1≤x≤1)的反函数为y=cosx,x∈R | ||||||||||
C.函数y=xm2+m-1(m∈N)为奇函数 | ||||||||||
D.函数f(x)=sin2x-(
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