若Inx-Iny=a,则In(x/3)^3-In(y/2)^3等于
问题描述：
若Inx-Iny=a,则In(x/3)^3-In(y/2)^3等于
在线等·····急
A a/2 B a C 3a/2 D3a
答
In(x/3)^3-In(y/2)^3
＝3[ln(x/3)-ln(y/2)]
=3[lnx-ln3-(lny-ln2)]
=3[(lnx-lny)-(ln3-ln2)]
=3a+3ln(2/3)