Book
Linear Algebra
Author
Gilbert Strang
Edition
print 'finding inverse of A1' print '---------------------' A1=matrix([[0,2],[3,0]]) x1=(A1[0,0]*A1[1,1])-(A1[0,1]*A1[1,0]) print '---A1---' print A1 print '---det of A1---' print x1 x2= matrix ([[A1[1,1],-A1[0,1]],[-A1[1,0],A1[0,0]]]) print '---inverse---' print (1/x1)*x2 print 'finding inverse of A2' print '---------------------' A2=matrix([[2,0],[4,2]]) x3=(A2[0,0]*A2[1,1])-(A2[0,1]*A2[1,0]) print '---A2---' print A2 print '---det of A2---' print x3 x4= matrix ([[A2[1,1],-A2[0,1]],[-A2[1,0],A2[0,0]]]) print '---inverse---' print (1/x3)*x4 print 'inverse of A3' print '--------------' var('theta') A3=matrix([[cos(theta),-sin(theta)],[sin(theta),cos(theta)]]) x5=(A3[0,0]*A3[1,1])-(A3[0,1]*A3[1,0]) print '---A3---' print A3 print '---det of A3---' print x5 x6= matrix ([[A3[1,1],-A3[0,1]],[-A3[1,0],A3[0,0]]]) print '---inverse---' print (1/x5)*x6
Solution by:
- V.J.Ramchand, Student, GITAM University
- G.Vamsi krishna, Student, GITAM University