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

/* code_begins */

{{{
A=matrix([[1,2],[2,4]])
B=matrix([[2,1,4],[3,1.5,6]])
var('c,b')
M=matrix([[1,b],[c,b*c]])
print '---A---'
print A
print '---B---'
print B
print '---M---'
print M
print 'Rank of AB'
print (A*B).rank()
print 'Rank of AM'
print (A*M).rank()
}}}

/* code_ends */

 * '''Solution by''': 
   *V.J.Ramchand, Student, GITAM University
   *G.Vamsi krishna, Student, GITAM University