
Iterative methods  (1.2)  (1.5)  (1.6)  (2.2) 

Number of steps  1  2  2  3 
Rate of convergence  2  4  4  6 
Number of functional evaluations     
The classical efficiency index     
Number of LU factorizations  1  2  2  1 
Cost of LU factorizations (based on flops)     
Cost of linear systems (based on flops)     
Flopslike efficiency index     
