(log2)5 /(lg4+2lg5 )
=lg5/lg2 /(2 lg2+2lg5 )
=0.5lg5/lg2不好意思我忘记补充问题了 能帮我再看看吗 >M<(log2)5 >lg4+2lg5 (log2)5=lg5/lg2=0.699/0.301>2lg4+2lg5=2lg4+2lg5=2