高中函数题,f(x)=3ax^2+2bx+c,若a+b+c=0,c>0,3a+2b+c>0.求证:1、函数图像与x轴有两个交点,2、高中函数题,f(x)=3ax^2+2bx+c,若a+b+c=0,c>0,3a+2b+c>0.求证:1、函数图像与x轴有两个交点2、-2
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![高中函数题,f(x)=3ax^2+2bx+c,若a+b+c=0,c>0,3a+2b+c>0.求证:1、函数图像与x轴有两个交点,2、高中函数题,f(x)=3ax^2+2bx+c,若a+b+c=0,c>0,3a+2b+c>0.求证:1、函数图像与x轴有两个交点2、-2](/uploads/image/z/2084019-51-9.jpg?t=%E9%AB%98%E4%B8%AD%E5%87%BD%E6%95%B0%E9%A2%98%2Cf%28x%29%3D3ax%5E2%2B2bx%2Bc%2C%E8%8B%A5a%2Bb%2Bc%3D0%2Cc%3E0%2C3a%2B2b%2Bc%3E0.%E6%B1%82%E8%AF%81%EF%BC%9A1%E3%80%81%E5%87%BD%E6%95%B0%E5%9B%BE%E5%83%8F%E4%B8%8Ex%E8%BD%B4%E6%9C%89%E4%B8%A4%E4%B8%AA%E4%BA%A4%E7%82%B9%2C2%E3%80%81%E9%AB%98%E4%B8%AD%E5%87%BD%E6%95%B0%E9%A2%98%2Cf%28x%29%3D3ax%5E2%2B2bx%2Bc%2C%E8%8B%A5a%2Bb%2Bc%3D0%2Cc%3E0%2C3a%2B2b%2Bc%3E0.%E6%B1%82%E8%AF%81%EF%BC%9A1%E3%80%81%E5%87%BD%E6%95%B0%E5%9B%BE%E5%83%8F%E4%B8%8Ex%E8%BD%B4%E6%9C%89%E4%B8%A4%E4%B8%AA%E4%BA%A4%E7%82%B92%E3%80%81-2)
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