Book
Linear Algebra
Author
Gilbert Strang
Edition
k=var('k') a=matrix([[k,2,3],[k,k,4],[k,k,k]]) print a a.det() solve(a.det(),k) a=matrix([[4,2,3],[4,4,4],[4,4,4]]) print a a.pivots() a=matrix([[2,2,3],[2,2,4],[2,2,2]]) print a a.pivots() a=matrix([[0,2,3],[0,0,4],[0,0,0]]) print a a.pivots()
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