start point =        -3         -6 
function 'test'
sr1     : calls=  40 |g|=4.7002e-05 x=         1          1 
broyden : calls=  40 |g|=3.0471e-05 x=         1          1 
newton  : calls=  43 |g|=5.5851e-06 p=         1          1 
function 'rosenbrock'
sr1     : calls=  86 |g|=1.6194e-06 x=         1          1 
broyden : calls=  97 |g|=9.7826e-06 x=         1          1 
newton  : calls= 378 |g|=4.5926e-05 p=         1          1