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

/* code_begins */

{{{
g=matrix([[1,0,0],[0,1,0],[0,1,1]])
f=matrix([[1,0,0],[0,1,0],[1,0,1]])
e=matrix([[1,0,0],[-2,1,0],[0,0,1]])
p=~g
q=~f
r=~e
d=g*f*e
#print d
l=r*q*p
#print l
m=d*l
n=l*d
print m
print n 

}}}# L is the upper triangular matrix and multiplication of (g*f*e) is also a upper triangular matrix 
# Multiplication of d=(g*f*e) and l=(r*q*p) l*d=d*l they both are same which is identity matrix
/* code_ends */

 * '''Solution by''': 
   
   * <Shravan sanghishetty>, <Student>, <vignan>
   * <karthik.p>, <Student>, <Vignan>
   * <sridhar.b>,<student>,<Vignan>