已知函数f(x)=lnx.g(x)=x.(1)若x>1.求证:f(x)>2g(x-1/x+1) (2)是否有实数k.使方程1/2g(x^2)-f...已知函数f(x)=lnx.g(x)=x.(1)若x>1.求证:f(x)>2g(x-1/x+1) (2)是否有实数k.使方程1/2g(x^2)-f(1+x^2)=k有四个不同的实根?若
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![已知函数f(x)=lnx.g(x)=x.(1)若x>1.求证:f(x)>2g(x-1/x+1) (2)是否有实数k.使方程1/2g(x^2)-f...已知函数f(x)=lnx.g(x)=x.(1)若x>1.求证:f(x)>2g(x-1/x+1) (2)是否有实数k.使方程1/2g(x^2)-f(1+x^2)=k有四个不同的实根?若](/uploads/image/z/988585-25-5.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dlnx.g%28x%29%3Dx.%281%29%E8%8B%A5x%3E1.%E6%B1%82%E8%AF%81%EF%BC%9Af%28x%29%3E2g%28x-1%2Fx%2B1%29+%282%29%E6%98%AF%E5%90%A6%E6%9C%89%E5%AE%9E%E6%95%B0k.%E4%BD%BF%E6%96%B9%E7%A8%8B1%2F2g%28x%5E2%29-f...%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%28x%29%3Dlnx.g%28x%29%3Dx.%281%29%E8%8B%A5x%3E1.%E6%B1%82%E8%AF%81%EF%BC%9Af%28x%29%3E2g%28x-1%2Fx%2B1%29+%282%29%E6%98%AF%E5%90%A6%E6%9C%89%E5%AE%9E%E6%95%B0k.%E4%BD%BF%E6%96%B9%E7%A8%8B1%2F2g%28x%5E2%29-f%281%2Bx%5E2%29%3Dk%E6%9C%89%E5%9B%9B%E4%B8%AA%E4%B8%8D%E5%90%8C%E7%9A%84%E5%AE%9E%E6%A0%B9%3F%E8%8B%A5)
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