(a) T(n) = 2 T(n/3) + 1
Solution
The given function is a recurrence relation often used in the analysis of algorithms. To solve it, we can use the Master Theorem which is used for solving recurrence relations of the form T(n) = aT(n/b) + f(n).
Here, a = 2, b = 3, and f(n) = 1.
The Master Theorem states that the solution can be found by comparing f(n) with n^log_b(a).
Here, log_b(a) = log_3(2) ≈ 0.631.
Since f(n) = 1 = n^0, and 0 < log_3(2), we are in the case 1 of the Master Theorem.
Therefore, the solution is T(n) = Θ(n^log_b(a)) = Θ(n^log_3(2)).
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