Differences between revisions 2 and 3
⇤ ← Revision 2 as of 2010-12-18 11:45:15 →
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Editor: Jrachit
Comment:
← Revision 3 as of 2010-12-18 12:27:56 → ⇥
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Editor: Jrachit
Comment:
Deletions are marked like this. Additions are marked like this.
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       * AMIT TEWARI, STUDENT, IIT ROORKEE
   * ARNAB BASU, STUDENT, IIT ROORKEE
   * SHUBHAM MITTAL, STUDENT, IIT ROORKEE

  • Book

    Linear Algebra

    Author

    Gilbert Strang

    Edition

    		 

x,y,z=var('x,y,z')
A=matrix(QQ,[[2,-3,0],[4,-5,1],[2,-1,-3]])
print A
print
b = vector([3,7,5])
C = A.augment(b.transpose())
print C
print
C.swap_rows(1,0)
print C
print
C.add_multiple_of_row(1, 0,-1/2)
C.add_multiple_of_row(2,0,-1/2)
print C
print
C.swap_rows(1,2)
print C
print
C.add_multiple_of_row(2,1,1/3)
print C
print
z = 0
y = C[1,3]/C[1,1]
x = (C[0,3] - C[0,2]*z - C[0,1]*y)/C[0,0]
print x, y, z

  • Solution by:

    • RACHIT JHA, STUDENT, IIT ROORKEE
    • AMIT TEWARI, STUDENT, IIT ROORKEE
    • ARNAB BASU, STUDENT, IIT ROORKEE
    • SHUBHAM MITTAL, STUDENT, IIT ROORKEE

Strang-1.3-13-U (last edited 2010-12-18 12:27:56 by Jrachit)