已知函数f(x)=-1+loga(x+2)(a>0且a≠1),g(x)=(1/2)的x-1次方,若函数F(x)=f(x)-g(x)的图像过点(2,1/2),证明:方程F(x)=0在(1,2)上有唯一解.已知二次函数y=f(x),当3≤x≤6时有
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![已知函数f(x)=-1+loga(x+2)(a>0且a≠1),g(x)=(1/2)的x-1次方,若函数F(x)=f(x)-g(x)的图像过点(2,1/2),证明:方程F(x)=0在(1,2)上有唯一解.已知二次函数y=f(x),当3≤x≤6时有](/uploads/image/z/2587279-31-9.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3D-1%2Bloga%EF%BC%88x%2B2%EF%BC%89%EF%BC%88a%EF%BC%9E0%E4%B8%94a%E2%89%A01%EF%BC%89%2Cg%EF%BC%88x%EF%BC%89%3D%EF%BC%881%2F2%EF%BC%89%E7%9A%84x-1%E6%AC%A1%E6%96%B9%2C%E8%8B%A5%E5%87%BD%E6%95%B0F%EF%BC%88x%EF%BC%89%3Df%EF%BC%88x%EF%BC%89-g%EF%BC%88x%EF%BC%89%E7%9A%84%E5%9B%BE%E5%83%8F%E8%BF%87%E7%82%B9%EF%BC%882%2C1%2F2%EF%BC%89%2C%E8%AF%81%E6%98%8E%EF%BC%9A%E6%96%B9%E7%A8%8BF%EF%BC%88x%EF%BC%89%3D0%E5%9C%A8%EF%BC%881%2C2%EF%BC%89%E4%B8%8A%E6%9C%89%E5%94%AF%E4%B8%80%E8%A7%A3.%E5%B7%B2%E7%9F%A5%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Df%EF%BC%88x%EF%BC%89%2C%E5%BD%933%E2%89%A4x%E2%89%A46%E6%97%B6%E6%9C%89)
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