I have an exam in 2 days and Im still getting confused on how to find y(adsbygoogle = window.adsbygoogle || []).push({}); _{p}, the particular solution.

for example

y''+ 4y = 9te^t+ 4

or tsin(2t) + 2

Is it only by guessing and thats it? I still cant answer these questions 100% correctly. I would like to have your advises to find the best way to solve this complicated undertemind coeff.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Finding Particular solution

**Physics Forums | Science Articles, Homework Help, Discussion**