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11. Points=2 Given a real number x and a positive integer k, determine the number of multiplications used to find x?" starting with x and successively squaring (to find x, x4, and so on). Is this a more efficient way to find x than by multiplying x by itself the appropriate number of times? 12. Points=2 Determine the least number of comparisons, or best-case performance, 12a) to find the maximum of a sequence of n integers. 12b) to locate an element in a list of n terms using a binary search