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已知命题“\( \forall x\in \mathrm{R}\),\( a{x}^{2}+4x-1<0\)”是假命题,则实数\(a\)的取值范围是( )
A.\(\left( { - \infty , - 4} \right)\)
B.\(\left( { - \infty ,4} \right)\)
C.\(\left[ { - 4, + \infty } \right)\)
D.\(\left[ {4, + \infty } \right)\)
参考答案:C
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