## page was renamed from SageDays/Kreyszig-2.1-6-S
 ||'''Book'''|| Advanced Engineering Mathematics ||
 ||'''Author'''|| Erwin Kreyszig ||
 ||'''Edition'''|| 8th Edition ||

/* code_begins */

{{{
# page 69 EXAMPLE 6
reset()
def verify(y1, y2):
    if diff(diff(y1)) + y1 == 0 and diff(diff(y2)) + y2 == 0:
        return 'solution'
    else:
        return 'not a solution'
def solve(y1, y2):
    if diff(y1/y2) == 0:
        return 'const'
    else:
        return 'not a const'
print verify(cos(x), sin(x))
print solve(cos(x), sin(x))
}}}

/* code_ends */

 * '''Solution by''': 
   * T R Shyam Sundar, Student, CMI
   * Sonam Kumar, Student, CMI
   * Vignesh Ganapathiraman, Student, CMI
   * Pooja Kalra, Student, Malwa Institute of Technology