1、pmt(10%r,5n,0pv,30fv)2、fv(5%r,10n,-5pv,0pmt); fv(5%r,10n,0pv,-0.6pmt) 你一个一个这样算吧4、r=1.06/1.03-1pmt(r,10n,0pv,8fv)这些都是基础问题啊