Find-r-x-t-y-t-satisfying-dr-dt-Ar-0-where-A-3-1-8-3-by-using-a-matrix-integrating-factor-

Question Number 2130 by Yozzi last updated on 03/Nov/15

F i n d r = (\begin{matrix} x (t) \\ y (t) \end{matrix}) s a t i s f y i n g

\frac{d r}{d t} + A r = 0

w h e r e A = [\begin{matrix} - 3 - 1 \\ 8 3 \end{matrix}] b y u s i n g

a m a t r i x i n t e g r a t i n g f a c t o r .