若函数f(x)=1-根号(ax^2+25)的定义域为[-5,0],点p(-2,-4)在它的反函数y=f-1(x)上,求a的值及其反函数的式
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![若函数f(x)=1-根号(ax^2+25)的定义域为[-5,0],点p(-2,-4)在它的反函数y=f-1(x)上,求a的值及其反函数的式](/uploads/image/z/8633059-43-9.jpg?t=%E8%8B%A5%E5%87%BD%E6%95%B0f%28x%29%3D1-%E6%A0%B9%E5%8F%B7%28ax%5E2%2B25%29%E7%9A%84%E5%AE%9A%E4%B9%89%E5%9F%9F%E4%B8%BA%5B-5%2C0%5D%2C%E7%82%B9p%28-2%2C-4%29%E5%9C%A8%E5%AE%83%E7%9A%84%E5%8F%8D%E5%87%BD%E6%95%B0y%3Df-1%28x%29%E4%B8%8A%2C%E6%B1%82a%E7%9A%84%E5%80%BC%E5%8F%8A%E5%85%B6%E5%8F%8D%E5%87%BD%E6%95%B0%E7%9A%84%E5%BC%8F)
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