请问一下f(x)=log9(x 8-α/x)在[1,正∞)include

问题描述:

请问一下f(x)=log9(x 8-α/x)在[1,正∞)include

limx*sin(1/x) 对比f(-x 5)=—f(x 5)还是—f(x-5)对比M=N=include