sentence1: Use a recurrence tree to determine a good asymptotic upper bound on the recurrence -LRB- -RRB- = -LRB- − 1 -RRB- + -LRB- / 2 -RRB- + . ?
sentence2: Use a recurrence tree to determine a good asymptotic upper bound on the recurrence -LRB- -RRB- = -LRB- − 1 -RRB- + -LRB- / 2 -RRB- + ?