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

/* code_begins */

{{{
x = var('x')    # define a variable x
y = function('y',x)   # define x to be a function of that variable
DE=diff(y, x) - 2 * y
f=desolve(DE, y,ics=(0,4)); f
plot(f)
}}}

/* code_ends */

 * '''Solution by''': 
   * Meshram M.C., Professor, L.I.T.,R.T.M. Nagpur University, Nagpur
   * ARun C. H., Associate Professor, Nesamony Memorial Christian College, Marthandam
   * Shatheesh Sam, I., Research Scholar, Anna University Chennai