broyden:
 start point:         2          2 
ncalls=15
root=      1.03       1.03 
f(root)=  -6.4e-05   3.31e-06 
eps            = 0.0001
f(root).norm() = 6.4087781805145E-05
test passed

newton:
 start point:         2          2 
ncalls=28
root=      1.03       1.03 
f(root)=  -3.7e-05   1.91e-06 
eps            = 0.0001
f(root).norm() = 3.70632155471186E-05
test passed