命题P:对X属于[1,2],不等式X^2>或=k恒成立.命题Q:关于的X方程X^2-X+k=0有实数根.如果“非P”为假,“P且Q”为假,求的取值范围.ps:我做了,想对下答案.我的答案是k<或=1\4,P得到k<或=1。Q得到k<
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