In this paper, the Korteweg-de Vries equation is solved by pseudospectral method. In pseudospectral method we have to use matrix vector multiplication to compute derivative(s) of the unknown function. To reduce round off error in this multiplication we use Darvishi’s preconditionings. The numerical results have been compared with the exact solution. They are in good agreement with each other because graphs of exact solution and numerical solutions are very similar
کلید واژگان :
The Korteweg-de Vries equation; Pseudospectral method; Darvishi’s preconditionings
