已知命题p:4-x≤6,q:x>a-1,若p是q的充分不必要条件,求a的取值范围.
考点分析:
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如图,正方体ABCD-A
1B
1C
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1中,AB=2,点E为AD的中点,点F在CD上,若EF∥平面AB
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直线y=x被圆x
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命题“存在x∈R,使得x
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如图直三棱柱ABC-A
1B
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A.
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B.
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C.
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D.
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