The difficulty in decomposing rational function into partial fraction is to fix the undetermined coefficient in partial fraction.
将有理函数分解为部分分式的难点就是确定部分分式中的待定系数。
The undetermined coefficient of the model is selected by using the orthogonal optimum seeking method, thereby the quantitative relation of the model is determined.
用正交优选方法优选模型中的待求系数,确定了模型的定量关系。
By using the undetermined coefficient method, a new scheme is derived from the HAUC2 scheme to simulate the two dimensional convection-diffusion equation.