#Kreyszig Problem set 2.9 Question 13
var('x')
y=function('y',x)
print desolve(diff(y,x,2)+8*diff(y,x)+16*y==64*cosh(4*x),[y,x])

SageDays/Kreyszig-2.9-13 (last edited 2010-08-11 12:06:19 by belindadcunha)