Asequence of n operations is performed on a datastructure. the ith operation costs i if i is an exact power of 2,and 1 otherwise. use potential method of analysis to determine theamortized cost per operation? ? reply urgently got to submit it in 2 hours

Events and conditions that happen within an organization that are somewhat easier to deal with when responding to change are called

Suppose there is a relation r(a, b, c) with a b+-tree index with search keys (a, b).1. what is the worst-case cost of finding records satisfying 10 < a < 50 using this index, in terms of the number of records n1, retrieved and the height h of the tree? 2. what is the worst-case cost of finding records satisfying 10 < a < 50 and 5 < b < 10 using this index, in terms of the number of records n2 that satisfy this selection, as well as n1 and h defined above? 3. under what conditions on n1 and n2, would the index be an efficient way of finding records satisfying the condition from part (2)?

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