高中数学问题,急!已知lg2=0.3010,lg3=0.4771,求下列各对数的值:(1)lg12=lg(2^2×3)=lg2^2+lg3=0.090601+0.4771=0.22762441(2)lg32=lg(2^2×2^3)=lg2^2+lg2^3=0.090601+0.027270901=0.117871901(3)lg3/2=lg3-lg2=0.4771-0.3010=0.1761(4)lg√3/2=lg√3-lg2=0.690724-0.3010=0.389724请问我做得对吗?