||'''Book''' ||Advanced Engineering Mathematics ||
 ||'''Author''' ||Erwin Kreyszig ||
 ||'''Edition''' ||8th Edition ||



/* code_begins */

{{{
x = var('x')
y = function('y',x)
DE = diff(y, x) + y - x^2+2
a=desolve(DE, y,x)
print a
print
# validating the output
s= e^(-x)+x^2-2*x
diff(s,x) + s - x^2+2
}}}
 * '''Solution by''':
  * Ankur Khurana , Student, ITM Gurgaon
  * Gaurav Luthra, Student, KIIT Gurgaon