Given

(a) Determine the values of ||H||1 and ||H-1||1.
(b) When the system Hx = b is solved using MATLAB and the computed solution xʹ is used to compute a residual vector r = b - Hxʹ, it turns out that ||r||1= 0.36 ×10-11. Use this information to determine a bound on the relative error

where x is the exact solution to the system.

Transcribed Image Text:

16 120 240140 120 12002700 1680 240-2700 6480-4200 -140 1680-4200 2800 10 10 20 10 -1