Ononot — A recurrence relation an = c1 a{n-1} + c2 a{n-2} has charact

Recurrence Relationseasy

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A recurrence relation $a_n = c_1 a_{n-1} + c_2 a_{n-2}$ has characteristic roots $r_1$ and $r_2$ . Which identity correctly relates $c_1$ and $c_2$ to the roots?