投资效果连续型模型分析

本文先分析利息率恒定和变动两种状态下投入资金的增殖规律，然后运用数学的卷积知识，得出连续投入资金增殖的数学形式．并提出动态投资前向表达式和后向表达式及两者之间的关系．利用所得的结果，简要讨论了投资分析中常用的“净现值法”和“内部收益比较法”．之后，分析了在物价变动情况下的投资效果卷积式．最后，扼要介绍了分析投资效果的离散形式．

An analysis of continuous investment's mathematicle model

First the article analyses the sum rule of an investment and it's gain while profits are constant or variable,then the article gives us the mathematical formula of continuous investments put into producing subjects some times ago and the value at present by using mathematical's convolution and points the relation between foreword dynamic-investmentformula and backward dynamic-investment-formula. using these result,the article simply discusses"the Net Present Value Method "and" the Internal Rate of Returnnin common investment analyses. Finally,the article gives the formulas of investment result involving that prize is varies and being dispersion.