已知命题P:X1和X2是方程X^2-aX-2=0的两根、且不等式a^2-5a-3≥丨X1-X2丨对任何在[-1,1]的数都恒成立.命题q:函数y=lg(ax^2-x+a)的定义域为R、且p且p为假、p∪p为真、求a、
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![已知命题P:X1和X2是方程X^2-aX-2=0的两根、且不等式a^2-5a-3≥丨X1-X2丨对任何在[-1,1]的数都恒成立.命题q:函数y=lg(ax^2-x+a)的定义域为R、且p且p为假、p∪p为真、求a、](/uploads/image/z/14610765-21-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%91%BD%E9%A2%98P%EF%BC%9AX1%E5%92%8CX2%E6%98%AF%E6%96%B9%E7%A8%8BX%5E2-aX-2%3D0%E7%9A%84%E4%B8%A4%E6%A0%B9%E3%80%81%E4%B8%94%E4%B8%8D%E7%AD%89%E5%BC%8Fa%5E2-5a-3%E2%89%A5%E4%B8%A8X1-X2%E4%B8%A8%E5%AF%B9%E4%BB%BB%E4%BD%95%E5%9C%A8%5B-1%2C1%5D%E7%9A%84%E6%95%B0%E9%83%BD%E6%81%92%E6%88%90%E7%AB%8B.%E5%91%BD%E9%A2%98q%EF%BC%9A%E5%87%BD%E6%95%B0y%3Dlg%28ax%5E2-x%2Ba%29%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E4%B8%BAR%E3%80%81%E4%B8%94p%E4%B8%94p%E4%B8%BA%E5%81%87%E3%80%81p%E2%88%AAp%E4%B8%BA%E7%9C%9F%E3%80%81%E6%B1%82a%E3%80%81)
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