x = var('x')
y = function('y',x)
deq1 = 16*diff(y,x,4)-40*diff(y,x,2)+9==0
soln = desolve_laplace(deq1 ,[y,x])
soln

Kreyszig-2.14-9-U (last edited 2010-12-18 07:51:48 by shankar)