#Kreyszig Pg.107 Problem set 2.9 Question 14
var('x')
y=function('y',x)
print desolve(diff(y,x,2)-4*diff(y,x)+20*y==377*sin(x),[y,x])

SageDays/Kreyszig-2.9-14 (last edited 2010-08-11 11:48:56 by S Micheal Ammal)