下列区间中,f(x)=lg(x+1)为有界的是( )A.(-1,2) B.(-1,10的100次方) C.(0,3) D.(0,+∞)答案是C可是不知道为什么要选C
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![下列区间中,f(x)=lg(x+1)为有界的是( )A.(-1,2) B.(-1,10的100次方) C.(0,3) D.(0,+∞)答案是C可是不知道为什么要选C](/uploads/image/z/13332460-4-0.jpg?t=%E4%B8%8B%E5%88%97%E5%8C%BA%E9%97%B4%E4%B8%AD%2Cf%28x%29%3Dlg%28x%2B1%29%E4%B8%BA%E6%9C%89%E7%95%8C%E7%9A%84%E6%98%AF%28+%29A.%28-1%2C2%29+B.%28-1%2C10%E7%9A%84100%E6%AC%A1%E6%96%B9%29+C.%280%2C3%29+D.%280%2C%2B%E2%88%9E%29%E7%AD%94%E6%A1%88%E6%98%AFC%E5%8F%AF%E6%98%AF%E4%B8%8D%E7%9F%A5%E9%81%93%E4%B8%BA%E4%BB%80%E4%B9%88%E8%A6%81%E9%80%89C)
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