若log(x+3)
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若log(x+3)
若log(x+3)
若log(x+3)
首先要考虑定义域,X+3>0,X-2>0,得出X的范围是X>2,a>0且不等于一
但是我们看到X-2显然大于X+3所以该函数一定是减函数,所以X得范围是(2,+ ∞),a的范围是(0,1)
若log(x+3)
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