已知幂函数f(x),g(x),其图像分别过(-2,-8)与(—4,-4)点.(1)求f(x),g(x)的解析式(2)当X为何值时,f(x)>g(x),f(x)
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![已知幂函数f(x),g(x),其图像分别过(-2,-8)与(—4,-4)点.(1)求f(x),g(x)的解析式(2)当X为何值时,f(x)>g(x),f(x)](/uploads/image/z/3014645-5-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%B9%82%E5%87%BD%E6%95%B0f%28x%29%2Cg%28x%29%2C%E5%85%B6%E5%9B%BE%E5%83%8F%E5%88%86%E5%88%AB%E8%BF%87%EF%BC%88-2%2C-8%EF%BC%89%E4%B8%8E%EF%BC%88%E2%80%944%2C-4%EF%BC%89%E7%82%B9.%EF%BC%881%EF%BC%89%E6%B1%82f%28x%29%2Cg%28x%29%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%EF%BC%882%EF%BC%89%E5%BD%93X%E4%B8%BA%E4%BD%95%E5%80%BC%E6%97%B6%2Cf%28x%29%3Eg%28x%29%2Cf%28x%29)
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