det(A -λE) =0
(6-λ)(-6-λ)+32=0
-36 +λ^2+32=0
-4 +λ^2=0
λ^2=4
λ_1=2
λ_2=-2
---->c
a_11=6
a_12=-8
y_1 = C_1 e^{2t} +C_2 e^{-2t}
y_1 '=2 C_1 e^{2t} -2C_2 e^{-2t}
y_2= 1/(a_12)(y_1 ' -a_11*y_1)
y_2= (C_1)/2 * e^{2t} +C_2 e^{-2t}
-------->Fundamentalsystem:
e^{2t} , e^{-2t} .
(e^{2t})/2 , e^{-2t} .
in runden Klammern
