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四种命题

> 设命题p：函数f（x）=x 3-ax-1在区间[-1，1]上单调递减；命题q：函数y=ln（x 2+ax+1）的值域是R．如果命题p或q为真命题，p且q为假命题，则实数a的取值范围是（　　） A．（-∞，3] B．（-∞，-2]∪[2，3） C．（2，3] D．[3，+∞）

问题：

发布时间：2024-09-08

设命题p：函数f（x）=x ³-ax-1在区间[-1，1]上单调递减；命题q：函数y=ln（x ²+ax+1）的值域是R．如果命题p或q为真命题，p且q为假命题，则实数a的取值范围是（　　）

A．（-∞，3] B．（-∞，-2]∪[2，3） C．（2，3] D．[3，+∞）

参考答案：

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设命题p：函数f（x）=x 3-ax-1在区间[-1，1]上单调递减；命题q：函数y=ln（x 2+ax+1）的值域是R．如果命题p或q为真命题，p且q为假命题，则实数a的取值范围是（ ） A．（-∞，3] B．（-∞，-2]∪[2，3） C．（2，3] D．[3，+∞）

可能感兴趣的题目：

设命题p：函数f（x）=x ³-ax-1在区间[-1，1]上单调递减；命题q：函数y=ln（x ²+ax+1）的值域是R．如果命题p或q为真命题，p且q为假命题，则实数a的取值范围是（　　）

A．（-∞，3] B．（-∞，-2]∪[2，3） C．（2，3] D．[3，+∞）