若函数f(x)=(m²+4m-5)x²-4(m-1)x+3的图像都在x轴上方,求实数m的取值范围.
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![若函数f(x)=(m²+4m-5)x²-4(m-1)x+3的图像都在x轴上方,求实数m的取值范围.](/uploads/image/z/4112814-30-4.jpg?t=%E8%8B%A5%E5%87%BD%E6%95%B0f%28x%29%3D%28m%26%23178%3B%2B4m-5%29x%26%23178%3B-4%EF%BC%88m-1%EF%BC%89x%2B3%E7%9A%84%E5%9B%BE%E5%83%8F%E9%83%BD%E5%9C%A8x%E8%BD%B4%E4%B8%8A%E6%96%B9%2C%E6%B1%82%E5%AE%9E%E6%95%B0m%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4.)
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