x | ||
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A.在(-1,1)上单调递增 |
B.在(-1,0)上单调递增,在(0,1)上单调递减 |
C.在(-1,1)上单调递减 |
D.在(-1,0)上单调递减,在(0,1)上单调递增 |
x | ||
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-x | ||
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x | ||
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1 | ||||
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A.(-∞,4) | B.(-4,4] | C.(-∞,-4)∪[2,+∞) | D.[-4,2) |
A.奇函数 | B.偶函数 | C.增函数 | D.周期函数 |
x |
2 |
y |
3 |
1 | |||
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A.f(a+1)≥f(b+2) | B.f(a+1)>f(b+2) | C.f(a+1)≤f(b+2) | D.f(a+1)<f(b+2) |
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