For an=2an−1−2an−2a_n = 2a_{n-1} - 2a_{n-2}an=2an−1−2an−2 with a0=1,a1=1a_0 = 1, a_1 = 1a0=1,a1=1, find a5a_5a5. (The characteristic equation has complex roots.)
0
-2
-4
4