【導讀】本試卷分第I卷（選擇題）和第II卷兩部分，已知全集U＝Z，集合A＝{x|x2＝x}，B＝{－1，0，1，若隨機事件,AB滿足()()()1PABPAPB???，則事件A與B的關。，則下列關于()fx的說。B．若函數(shù)()fx在區(qū)間(,)mn內有兩個零點，則必有()()0fmfn?，則存在實數(shù)t，的三邊,,abc和面積S滿足22()Sabc???是()fx的一條對稱軸；的面積為2，且滿足04ABAC???．設AB和AC的夾角。成頻率分布直方圖；

　　

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