Book
Linear Algebra
Author
Gilbert Strang
Edition
var('x,y,z') A=matrix([[1,-4,-1],[1,1,0],[2,1,3]]) C=matrix([[1],[0],[0]]) r=A.det() C=matrix([[1,-4,-1],[1,1,0],[1,0,0]]) q=C.det() x=q/r x B=matrix([[1,-4,-1],[1,0,0],[2,1,3]]) t=B.det() y=t/r y F=matrix([[1,0,0],[1,1,0],[2,1,3]]) e=F.det() z=e/r z
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