Question: A sequence is defined for n > 1 by the recurrence relation u n + 1 = pu n + q, u 1 = 2.

A sequence is defined for n > 1 by the recurrence relation un + 1 = pun + q, u1 = 2. Given that u2 = −1 and u3 = 11, find the values of p and q.

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