It can be applied to solve nonpositive definite or positive definite partialdifferential equation with arbitrary variable coefficient under arbitrary boundary condition.
它可以求解在任意边界条件下任意变系数正定或非正定偏微分方程。
2
It doesn't need the variational principle and can be applied to solve non-positive or positive definite partialdifferential equations with arbitrary variable coefficient.
In this paper, we studied oscillation of the solutions of neutral hyperbolic partialdifferential equations with nonlinear diffusion coefficient and damped terms.