人教A版高中数学必修1课时6 函数的定义域 一套小试卷,请各位哥哥姐姐帮小弟一下1.已知函数f(x)=1/ax2+ax+2的定义域是全体实数,求实数a的取值范围.2.已知函数f(x)=根号(ax2+ax+2)的定义域是全体
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![人教A版高中数学必修1课时6 函数的定义域 一套小试卷,请各位哥哥姐姐帮小弟一下1.已知函数f(x)=1/ax2+ax+2的定义域是全体实数,求实数a的取值范围.2.已知函数f(x)=根号(ax2+ax+2)的定义域是全体](/uploads/image/z/1996251-51-1.jpg?t=%E4%BA%BA%E6%95%99A%E7%89%88%E9%AB%98%E4%B8%AD%E6%95%B0%E5%AD%A6%E5%BF%85%E4%BF%AE1%E8%AF%BE%E6%97%B66+%E5%87%BD%E6%95%B0%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F+%E4%B8%80%E5%A5%97%E5%B0%8F%E8%AF%95%E5%8D%B7%2C%E8%AF%B7%E5%90%84%E4%BD%8D%E5%93%A5%E5%93%A5%E5%A7%90%E5%A7%90%E5%B8%AE%E5%B0%8F%E5%BC%9F%E4%B8%80%E4%B8%8B1.%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D1%2Fax2%2Bax%2B2%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E6%98%AF%E5%85%A8%E4%BD%93%E5%AE%9E%E6%95%B0%EF%BC%8C%E6%B1%82%E5%AE%9E%E6%95%B0a%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.2.%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3D%E6%A0%B9%E5%8F%B7%28ax2%2Bax%2B2%29%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E6%98%AF%E5%85%A8%E4%BD%93)
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