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//page 36
//Example 2.7
clear;
clc;
close;
disp('A = m*n matrix over field F');
disp('X and Y are n*1 matrices over F');
disp('A*X = 0, A*Y = 0');
disp('c is a scalar')
disp('So, A(cX+Y) = c*A*X + A*Y = 0');
disp('Hence, the set of all n*1 column matrices is the subspace of space of all n*1 matrices over F');
//end
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