求解内部收益率的方法及其精确度的问题

Methods of solving internal return rate and problems of its accuracy

结合教材中用线性插值法求企业内部收益率的问题,阐明了用线性插值法计算结果会有较大的误差,由此提出另一种方法——泰勒展式趋近法来求解内部收益率,从而降低误差,使结果更加精确。

Combining with the problems of solving enterprise internal return rate based on linear interpolation method in the teaching material, the author describes that the calculation results based on the linear interpolation method has larger errors, and provides another method, that is solving internal return rate based on the Taylor expansion approaching method, thus decreasing errors and making results more exactly.