Discrete Poisson equation: Difference between revisions
→On a twodimensional rectangular grid
m (→Methods of solution: + also) 

:<math>
( {\nabla}^2 u )_{ij} = \frac{1}{dx^2} ( u_{i+1,j}
</math>

m (→Methods of solution: + also) 

:<math>
( {\nabla}^2 u )_{ij} = \frac{1}{dx^2} ( u_{i+1,j}
</math>
