若函数f[(x+1)/x]=(x²+1)/x²+1/x,则函数f(x)的表达式为( )A.f(x)=x²-2x+1 B.f(x)=x²-x+1(x≠0) C f(x)=x²-x+1(x∈R) D f(x)=x²-x+1(x≠1)
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![若函数f[(x+1)/x]=(x²+1)/x²+1/x,则函数f(x)的表达式为( )A.f(x)=x²-2x+1 B.f(x)=x²-x+1(x≠0) C f(x)=x²-x+1(x∈R) D f(x)=x²-x+1(x≠1)](/uploads/image/z/13434658-34-8.jpg?t=%E8%8B%A5%E5%87%BD%E6%95%B0f%5B%28x%2B1%29%2Fx%5D%3D%EF%BC%88x%26%23178%3B%2B1%EF%BC%89%2Fx%26%23178%3B%2B1%2Fx%2C%E5%88%99%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F%E4%B8%BA%EF%BC%88+%EF%BC%89A.f%28x%29%3Dx%26%23178%3B-2x%2B1+B.f%28x%29%3Dx%26%23178%3B-x%2B1%28x%E2%89%A00%29+C+f%28x%29%3Dx%26%23178%3B-x%2B1%28x%E2%88%88R%EF%BC%89+D+f%28x%29%3Dx%26%23178%3B-x%2B1%28x%E2%89%A01%EF%BC%89)
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