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

/* code_begins */

{{{
x = var('x')
y = function('y',x)
deq1 = y*diff(y,x,4)-y ==0
soln = desolve_laplace(deq1 ,  [y,x] , ics=[-1,7,-1,7])
soln
plot(y)
}}}

/* code_ends */

 * '''Solution by''': 
   * V Krishna Harsha , Student , ASR College Of Engineering