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?

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# Reduction of order from 2nd to 1st

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