∴对称轴﹣(a2﹣a)≤﹣2,
即a2﹣a﹣2≥0,解得a≤﹣1或a≥2.
即p:a≤﹣1或a≥2.
由不等式ax2﹣ax+1>0的解
如图所示,在物理实验中小明把鸡蛋放入盛水的杯中,鸡蛋沉在杯底如图甲杯中加盐,鸡蛋悬浮如图乙,再加盐,鸡蛋漂浮如图丙,在这三种情况中,各物理量之间的关系正确的是( )
已知点A(0,1,2),B(2,3,4),|AB|=( )
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