Hi,

This technique of solving PDEs uses the Taylor expansion: link.

To calculate $\displaystyle f$ at the $\displaystyle n+1^{th}$ time step, one needs to know $\displaystyle f$ at the $\displaystyle j+1^{th}$ distance step. But how is one expected to know the latter, since the unknown solution is a function of both timeanddistance?!

Seeking clarification. Thanks.