logm7logm7logm7因为logm7所以0而logm7m>n则0比如log2 7>log3 7log1/2 7=-log2 7<-log3 7=log1/3 7等价于log1/2 7这里n=1/3 m=1/2
logm7因为logm7所以0而logm7m>n则0比如log2 7>log3 7log1/2 7=-log2 7<-log3 7=log1/3 7等价于log1/2 7这里n=1/3 m=1/2