lambda=0.5 lambda=1 nsteps=2 normz=2.95892383265234 lambda=1 lambda=1 nsteps=4 normz=2.07325112679161 lambda=0.5 lambda=1 lambda=1 lambda=1 lambda=1 lambda=1 lambda=1 lambda=1 lambda=1 lambda=0.5 lambda=0.5 lambda=1 lambda=0.5 lambda=0.5 lambda=0.5 broyden: job done: |gx|