||'''Book'''|| Linear Algebra ||
 ||'''Author'''|| Gilbert Strang ||
 ||'''Edition'''||  ||

/* code_begins */

{{{
#To find the incidence matrix and its null-space
A  = matrix([[1,0,1],[-1,1,0],[0,-1,-1]])
print A
print 'The determinant of the matrix is '
print det(A)
print 'This means infinitely many solutions'
print 'One of which is'
print vector([2,2,-2])
print 'Its null-space consists of linearly-independent elements of the form'
print '(x,x,-x)'
b = A.transpose()
print 'The transpose is '
print b
print 'Its null-space consists of linearly-independent elements of the form'
print '(x,x,x)'
}}}

/* code_ends */

* '''Solution by''': 
   * Arnab Basu, Student, IIT Roorkee
   * Amit Tewari, Student, IIT Roorkee
   * Rachit Jha, Student, IIT Roorkee
   * Shubham Mittal, Student, IIT Roorkee