Book
Linear Algebra
Author
Gilbert Strang
Edition
a=matrix([[5,0,0,0],[0,5,0,0],[0,0,5,0],[0,0,0,5]]) b=matrix([[1,1,1,1],[1,1,1,1],[1,1,1,1],[1,1,1,1]]) b a a-b c = (a-b)**-1 c #a=2/5,b=1/5;
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