$a_0 = 1, a_1 = 3$ and
$a_n = 2a_{n-1} + a_{n-2}$
How do I obtain a closed form for this sequence? We have learned about the method of characteristic roots, but I am unsure how to take that and turn this into a closed form.
$a_0 = 1, a_1 = 3$ and
$a_n = 2a_{n-1} + a_{n-2}$
How do I obtain a closed form for this sequence? We have learned about the method of characteristic roots, but I am unsure how to take that and turn this into a closed form.
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