Which recurrence relation has a general solution of the form an=c1λ1n+c2λ2na_n = c_1 \lambda_1^n + c_2 \lambda_2^nan=c1λ1n+c2λ2n?
an=5an−1−6an−2a_n = 5a_{n-1} - 6a_{n-2}an=5an−1−6an−2
an=an−1+na_n = a_{n-1} + nan=an−1+n
an=an−1+an−2+1a_n = a_{n-1} + a_{n-2} + 1an=an−1+an−2+1
an=2an−1+n2a_n = 2a_{n-1} + n^2an=2an−1+n2