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_其他解答

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

人气：464 ℃　时间：2020-09-15 13:43:17

解答

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)