_nx represents the nth iteration.
Homework Statement
Show that {_{n+2}}x = _nx + M^{-1}(b-A{_nx})
Homework Equations
{_{n+1}}x = _nx + M_1^{-1}(b-A{_nx})
{_{n+2}}x = {_{n+1}}x + M_2^{-1}(b-A{_{n+1}x})
M = M_1(M_1+M_2-A)^{-1}M_2
The Attempt at a Solution
I tried was...