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

/* code_begins */

{{{
x,c=var('x,c')
y = function('y', x)
y=c*exp(2*x)
d_y=derivative(y,x)
# d_y is the first derivative of y wrt x
y = var('y')
c_val=solve([c==y*exp(-2*x)], c)

d_y=d_y.subs(c_val[0])
print d_y

}}}

/* code_ends */

 * '''Solution by''': 
   * <sunny mehrotra>, <student>, <IIT Roorkee>
   * <sharat s.i>, <student>, <IIT Roorkee>