Y''-6y'+5y = -25t^3, Diff EQ, did I mess up my guess again?

[mr_coffee]

Hello everyone! its me!
I thought i for sure did this one right, but no, lies!
Directions are to find a particular solution

Here is what i did:
http://suprfile.com/src/1/1t3y9m/lastscan.jpg



Thanks :)

 

[quasar987]

Why are you so quick to conclude that B=C=D=0 ?

 

[quasar987]

See what I wrote here: https://www.physicsforums.com/showthread.php?t=112077

This should solve some of your coefficient finding nightmares.

 

[mr_coffee]

I don't see where i messed up here, i thought i found all the co-efficents correctly:
http://suprfile.com/src/1/1th0qc/lastscan.jpg

Anyone see? Thanks!@

 

[quasar987]

I don't. :/

 

[assyrian_77]

C is -186/5 so D must be changed too.

 

[quasar987]

Well spotted!

 

[mr_coffee]

Ahh good one!
thanks for the help everyone!
http://cwcsrv11.cwc.psu.edu/webwork2_files/tmp/equations/90/e5ef2b88d7f77d6789601eb3d10ebb1.png