已知K>0,函数f(x)=x^3-3x+k,g(x)=(2kx-k)/(x^2+2)(1)若对任意x1.x2在[-1,1]都有f(x1)=&>g(x2).求K的范围?(2)若存在X1X2在[-1,1],使得f(x1)
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![已知K>0,函数f(x)=x^3-3x+k,g(x)=(2kx-k)/(x^2+2)(1)若对任意x1.x2在[-1,1]都有f(x1)=&>g(x2).求K的范围?(2)若存在X1X2在[-1,1],使得f(x1)](/uploads/image/z/8595658-10-8.jpg?t=%E5%B7%B2%E7%9F%A5K%3E0%2C%E5%87%BD%E6%95%B0f%28x%29%3Dx%5E3-3x%2Bk%2Cg%28x%29%3D%282kx-k%29%2F%28x%5E2%2B2%29%281%29%E8%8B%A5%E5%AF%B9%E4%BB%BB%E6%84%8Fx1.x2%E5%9C%A8%5B-1%2C1%5D%E9%83%BD%E6%9C%89f%28x1%29%3D%26%3Eg%28x2%29.%E6%B1%82K%E7%9A%84%E8%8C%83%E5%9B%B4%3F%282%29%E8%8B%A5%E5%AD%98%E5%9C%A8X1X2%E5%9C%A8%5B-1%2C1%5D%2C%E4%BD%BF%E5%BE%97f%28x1%29)
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