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

/* code_begins */

{{{
var('p,q,r')
r=matrix([[p,q],[q,r]])
print r
s=r*r;s
det(s)
print "r is positive definite for det not equal to zero"
}}}

/* code_ends */

 * '''Solution by''': 
   * <sarada>, <student>,<prakasam>
<ananthalakshmi>, <student>, <prakasam>