When time domain solutions are required, the Laplace transform method is straightforward.

当需要时域解时, 拉氏变换方法也是很直接的.

When time domain solutions are required , the laplace transform method is straightforward.

当需要时域解时，拉氏变换方法也是很直接的。

This paper is based on the operation matrix and develop a numerical inversion of Laplace transform method.

本文以运算矩阵为基础，发展出一个值的反氏转换问题。

Then we obtained the equations of the survival probability of two risk models with constant interest which have studied in chapter three by means of Laplace transform and change of the model.

然后将第三章的两个模型分别推广到带常利率情形，利用模型转换和拉普拉斯变换得到了生存概率满足的关系式。