next up previous contents
Next: Second idea: an hyperbolic Up: The research of the Previous: The research of the   Contents

First idea: the discontinuous function

The first idea is to use a discontinuous function. I choose the Heavyside function which is defined by:

(58)

We can justify this function by saying that the exact solution can be a linear combinaison of in a one element case. Indeed, we can explain it with some schematics on Fig. 22.

Figure 22: The Heavyside function.



Renaud Merle 2000-08-26