Isn't that basically the method done in step-15 and step-33 (line search)? 
But why should my step length (I assume it is alpha) go to zero? Or is it 
the newton-update (which also should go to zero, when being close to the 
solution)?

Am Freitag, 6. Oktober 2017 15:13:08 UTC+2 schrieb Wolfgang Bangerth:
>
> > Currentl2 norm is0.003245 
> > Residual:0.001620 
> > 
> > Currentl2 norm is0.003245 
> > Residual:0.001620 
> > | 
> > 
> > with the l2-norm as the l2-norm of the RHS, and the residual calculated 
> as 
> > shown above. 
> Do you do a line search? Is your step length going to zero? 
> Best 
>   W. 
>
> -- 
> ------------------------------------------------------------------------ 
> Wolfgang Bangerth          email:                 [email protected] 
> <javascript:> 
>                             www: http://www.math.colostate.edu/~bangerth/ 
>
>

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