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#

An estimation of the slope of at the origin.

An estimation of the slope of at the origin is given by
. In the optimization program, we will only compute
when we have interior convergence. The algorithm to
find is the following:
- Set
.
- Set
- Set
- Try to factorize
.
**Success:** Set
**Failure:** Set

- If
go back to step 3.
- The required value of (=the approximation of the
slope at the origin) is inside

Frank Vanden Berghen
2004-04-19