练习1 cIc clear close all a=[12-13;2-264;1-132;0000] hlsa=det(a) Zha=rank(a) d=inv(a) t=trace(a) c=cond(a)练习1 • clc • clear • close all • a=[1 2 -1 3 ;2 -2 6 4 ;1 -1 3 2 ;0 0 0 0 ] • hlsa=det(a) • zhia=rank(a) • d=inv(a) • t=trace(a) • c=cond(a)