# Ch-4.3-ex-1-Final-허재석

## 2290 days ago by matrix

A=matrix(5, 5, [1, 1, 1, 1, 1, 2, 1, 1, -1, -11, -1, 1, 2, 1, 3, 3, 2, 2, -2, -4, 6, 4, -3, 1, -7]) b=matrix(5, 1, [-4, 0, 5, -1, 7]) A1=matrix(5, 5, [-4, 1, 1, 1, 1, 0, 1, 1, -1, -11, 5, 1, 2, 1, 3, -1, 2, 2, -2, -4, 7, 4, -3, 1, -7]) A2=matrix(5, 5, [1, -4, 1, 1, 1, 2, 0, 1, -1, -11, -1, 5, 2, 1, 3, 3, -1, 2, -2, -4, 6, 7, -3, 1, -7]) A3=matrix(5, 5, [1, 1, -4, 1, 1, 2, 1, 0, -1, -11, -1, 1, 5, 1, 3, 3, 2, -1, -2, -4, 6, 4, 7, 1, -7]) A4=matrix(5, 5, [1, 1, 1, -4, 1, 2, 1, 1, 0, -11, -1, 1, 2, 5, 3, 3, 2, 2, -1, -4, 6, 4, -3, 7, -7]) A5=matrix(5, 5, [1, 1, 1, 1, -4, 2, 1, 1, -1, 0, -1, 1, 2, 1, 5, 3, 2, 2, -2, -1, 6, 4, -3, 1, 7]) x=matrix(5, 1, [det(A1)/det(A), det(A2)/det(A), det(A3)/det(A), det(A4)/det(A), det(A5)/det(A)]) print A print print b print print "x1=", det(A1)/det(A) print "x2=", det(A2)/det(A) print "x3=", det(A3)/det(A) print "x4=", det(A4)/det(A) print "x5=", det(A5)/det(A) print print x print print (1/det(A))*A.adjoint()*b print print x==(1/det(A))*A.adjoint()*b #확인과정
 [ 1 1 1 1 1] [ 2 1 1 -1 -11] [ -1 1 2 1 3] [ 3 2 2 -2 -4] [ 6 4 -3 1 -7] [-4] [ 0] [ 5] [-1] [ 7] x1= -487/74 x2= 2017/222 x3= -737/222 x4= -409/148 x5= -187/444 [ -487/74] [2017/222] [-737/222] [-409/148] [-187/444] [ -487/74] [2017/222] [-737/222] [-409/148] [-187/444] True [ 1 1 1 1 1] [ 2 1 1 -1 -11] [ -1 1 2 1 3] [ 3 2 2 -2 -4] [ 6 4 -3 1 -7] [-4] [ 0] [ 5] [-1] [ 7] x1= -487/74 x2= 2017/222 x3= -737/222 x4= -409/148 x5= -187/444 [ -487/74] [2017/222] [-737/222] [-409/148] [-187/444] [ -487/74] [2017/222] [-737/222] [-409/148] [-187/444] True