一、内含报酬率定义对内含报酬率概念的定义,一般有两种:一是指能使投资项目的净现值等于零时的折现率;二是指投资项目实际可望达到的报酬率或方案本身的投资报酬率。第一种定义揭示了求解内含报酬率的重要表达式,即:n First, the definition of internal rate of return The definition of the concept of internal rate of return, there are two general: First, it means that the net present value of investment projects is equal to zero discount rate; second is the investment project is actually expected to pay Rate or return on investment of the program itself. The first definition reveals an important expression for solving the implied reward, namely: n