已知定义域在R上的函数f(x)满足f(2)=1,f'(x)为f(x)的导函数.已知y=f'(x)的图像如图所示,若两个正数a,b满足f(2a+b)>1,则(b-1)/(a-2)的取值范围( )A(-0.5,1) B(负无穷,-0.5) C(-2,1) D(负无
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![已知定义域在R上的函数f(x)满足f(2)=1,f'(x)为f(x)的导函数.已知y=f'(x)的图像如图所示,若两个正数a,b满足f(2a+b)>1,则(b-1)/(a-2)的取值范围( )A(-0.5,1) B(负无穷,-0.5) C(-2,1) D(负无](/uploads/image/z/7618774-22-4.jpg?t=%E5%B7%B2%E7%9F%A5%E5%AE%9A%E4%B9%89%E5%9F%9F%E5%9C%A8R%E4%B8%8A%E7%9A%84%E5%87%BD%E6%95%B0f%28x%29%E6%BB%A1%E8%B6%B3f%282%29%3D1%2Cf%27%28x%29%E4%B8%BAf%28x%29%E7%9A%84%E5%AF%BC%E5%87%BD%E6%95%B0.%E5%B7%B2%E7%9F%A5y%3Df%27%28x%29%E7%9A%84%E5%9B%BE%E5%83%8F%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E8%8B%A5%E4%B8%A4%E4%B8%AA%E6%AD%A3%E6%95%B0a%2Cb%E6%BB%A1%E8%B6%B3f%EF%BC%882a%2Bb%EF%BC%89%3E1%2C%E5%88%99%EF%BC%88b-1%EF%BC%89%2F%EF%BC%88a-2%EF%BC%89%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4%EF%BC%88+%EF%BC%89A%EF%BC%88-0.5%2C1%EF%BC%89+B%EF%BC%88%E8%B4%9F%E6%97%A0%E7%A9%B7%2C-0.5%EF%BC%89+C%EF%BC%88-2%2C1%EF%BC%89+D%EF%BC%88%E8%B4%9F%E6%97%A0)
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