log(m)27*log(9)4=6
log(m)27=lg27/lgm=3lg3/lgm
log(9)4=lg4/lg9=2lg2/(2lg3)
所以,log(m)27*log(9)4=3lg3*2lg2/(2lg3*lgm)=3lg2/lgm=6
即log(m)2=2
得m=√2