已知函数f(x)=Inx,g(x)=1/2x²-bx函数f(x)的图像在点(1,f(1))处的切线与g(x)的图像相切,求实数b的值②设h(x)=f(x)+g(x)若函数h(x)在定义域上存在单调减区间,求实数b的取值范围
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![已知函数f(x)=Inx,g(x)=1/2x²-bx函数f(x)的图像在点(1,f(1))处的切线与g(x)的图像相切,求实数b的值②设h(x)=f(x)+g(x)若函数h(x)在定义域上存在单调减区间,求实数b的取值范围](/uploads/image/z/2624108-68-8.jpg?t=%E5%B7%B2%E7%9F%A5%E5%87%BD%E6%95%B0f%EF%BC%88x%EF%BC%89%3DInx%2Cg%EF%BC%88x%EF%BC%89%3D1%2F2x%26%23178%3B-bx%E5%87%BD%E6%95%B0f%28x%29%E7%9A%84%E5%9B%BE%E5%83%8F%E5%9C%A8%E7%82%B9%EF%BC%881%2Cf%281%29%EF%BC%89%E5%A4%84%E7%9A%84%E5%88%87%E7%BA%BF%E4%B8%8Eg%28x%29%E7%9A%84%E5%9B%BE%E5%83%8F%E7%9B%B8%E5%88%87%2C%E6%B1%82%E5%AE%9E%E6%95%B0b%E7%9A%84%E5%80%BC%E2%91%A1%E8%AE%BEh%28x%29%3Df%28x%29%2Bg%28x%29%E8%8B%A5%E5%87%BD%E6%95%B0h%28x%29%E5%9C%A8%E5%AE%9A%E4%B9%89%E5%9F%9F%E4%B8%8A%E5%AD%98%E5%9C%A8%E5%8D%95%E8%B0%83%E5%87%8F%E5%8C%BA%E9%97%B4%EF%BC%8C%E6%B1%82%E5%AE%9E%E6%95%B0b%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
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