1,f(x)=sinx-2/cosx+1的最大值是?2,求不等式|根号x-1-2|>1的解集3,已知圆的方程(x-1)^2+(y-1)^2=8,直线为x+y=0,则圆上到直线的距离等于根号2的点有几个?对于 第一题,有选项的,A,3/4, B,-4/5, C-3/4 D,4/5
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![1,f(x)=sinx-2/cosx+1的最大值是?2,求不等式|根号x-1-2|>1的解集3,已知圆的方程(x-1)^2+(y-1)^2=8,直线为x+y=0,则圆上到直线的距离等于根号2的点有几个?对于 第一题,有选项的,A,3/4, B,-4/5, C-3/4 D,4/5](/uploads/image/z/12685319-71-9.jpg?t=1%2Cf%28x%29%3Dsinx-2%2Fcosx%2B1%E7%9A%84%E6%9C%80%E5%A4%A7%E5%80%BC%E6%98%AF%3F2%2C%E6%B1%82%E4%B8%8D%E7%AD%89%E5%BC%8F%7C%E6%A0%B9%E5%8F%B7x-1-2%7C%3E1%E7%9A%84%E8%A7%A3%E9%9B%863%2C%E5%B7%B2%E7%9F%A5%E5%9C%86%E7%9A%84%E6%96%B9%E7%A8%8B%28x-1%29%5E2%2B%28y-1%29%5E2%3D8%2C%E7%9B%B4%E7%BA%BF%E4%B8%BAx%2By%3D0%2C%E5%88%99%E5%9C%86%E4%B8%8A%E5%88%B0%E7%9B%B4%E7%BA%BF%E7%9A%84%E8%B7%9D%E7%A6%BB%E7%AD%89%E4%BA%8E%E6%A0%B9%E5%8F%B72%E7%9A%84%E7%82%B9%E6%9C%89%E5%87%A0%E4%B8%AA%3F%E5%AF%B9%E4%BA%8E+%E7%AC%AC%E4%B8%80%E9%A2%98%EF%BC%8C%E6%9C%89%E9%80%89%E9%A1%B9%E7%9A%84%EF%BC%8CA%2C3%2F4%2C+B%2C-4%2F5%2C+C-3%2F4+D%2C4%2F5)
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