I have been given the equation:(adsbygoogle = window.adsbygoogle || []).push({});

y'' + y' - 2y = 0

and asked:

" Express the equation as a 1st-order system. Solve the system using matrix methods."

I thought in order to reduce an equation you needed one solution to it already. I tried using the general solution but it got messy.

Someone please help?

**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!

# Reduction of order from 2nd to 1st

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