Question: Consider the sequence defined by an+1 = 50,- 4 and a = -24. (a) What is an? (b) Let A(z) be the formal power

Consider the sequence defined by an+1 = 50,- 4 and a = -24. (a) What is an? (b) Let A(z) be the formal power series". Find an expression for A(z) which does not involve an infinite sum (for a where the series converges). (c) Use your answer to part b to give a closed formula for ag.

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