河流水质污染中的反问题（Ⅱ）

The Inverse Problem from Water Pollution of River (Ⅱ)

继续讨论一类半线性抛物偏微分方程的反问题．在一定条件下，得到了问题的解的存在性、唯一性，并给出了近似解法．

A kind of inverse problem for a semilinear parabolic PDE is studied.Under some conditions on the data, the existence and uniqueness of solution for the inverseproblem are shown, and the approximate solution is given.