Book
Advanced Engineering Mathematics
Author
Erwin Kreyszig
Edition
8th Edition
x=var('x')#3.
y=function('y',x)
DE=diff(y,x,x)+2*diff(y,x)+y-exp(-x)*cos(x)
desolve(DE,[y,x])
Solution by:
<Manjusha S. Joshi>, <Lecturer>, <Bhaskaracharya Institute in Mathematics, Pune>