题目内容：

An annuity is a regular payment of income made at the end of a fixed period.
An annuity is a regular payment of income made at the end of a fixed period.Consider investing an annuity of amount,A,during each of n compounding periods with an interest rate i.This situation can be shown graphically in a cash flow diagram.

优质解答

年金是一种在固定期间结束时,给收入的定期付款假设投资额度为A,在每个记息期间（共有n个期间）的利率为i.这个投资计划可以用图线在现金流量表里面体现出来--------------------LZ这个是finance最基本的东西呀比如你...