设a>1,则log(0.2)a,0.2的a次方,a的0.2次方的大小关系是
问题描述:
设a>1,则log(0.2)a,0.2的a次方,a的0.2次方的大小关系是
答
因为log(0.2)a ,0.2的a次方两个函数互为反函数,画图可知,当a>1时,0
设a>1,则log(0.2)a,0.2的a次方,a的0.2次方的大小关系是
因为log(0.2)a ,0.2的a次方两个函数互为反函数,画图可知,当a>1时,0