Theorem of method of undetermined function for linear nonhomogeneous and its proof;

FEMOL with undetermined shape functions;

The application of method of undetermined coefficients in higher mathematics --To cultivate vocational students capacity of induction and application;

It can be structured by interpolation or be got by method of undetermined coefficients.

In this paper, two integral variation methods, method of undetermined coefficients and method of direction variation integration, which were first set up for the inverse variation problem of potential functions on KdV equation, are respectively applied to the inverse variation problem of the mKdV equation and the Harry Dym equation.

Up-wind scheme based on the undetermined coefficient method

By using the undetermined coefficient method, a new scheme is derived from the HAUC2 scheme to simulate the two dimensional convection-diffusion equation.

A new higher accuracy scheme named as ILF(Improved Leap-frog) scheme is developed by (using) the undetermined coefficient method to improve Leap-frog scheme.

Computing the equations of beams deflection curve by method of undetermined coefficients is expounded,and expressions of undetermined coefficients are deduced.

By applying the method of undetermined coefficients,this paper is devoted to finding a particular solution for a kind of systems of three-dimensional second-order differential equations with constant coefficients.

By introducing, a new transformation and selecting appropriate trial functions,nonlinear partial differential equations can be converted to algebraic equations,and their related coefficients can be easily determined by making use of the method of undetermined coefficients.