10b. Given the digraph below. Is the following a valid topological sort? Circle: YES or NO 10, 6, 3, 2, 1, 0, 7, 14, 15, 4, 8, 11, 5, 9, 12, 16, 13, 17 17
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- To compute the average of the squares of the elements of a vector V, aka the mean square, we (Note: use randn to create a random vector) Select one: a. We use polyfit which does least squares and skip the minimization part b.we use sum(V.^2)./length(V*V) c.we use sum(V.*V)/length(V) d.we use mean(V) e.we use sum(V^2)/length(V)Question 3 Please answer them correctlyLet S be a set of n distinct positive integers, where n is odd. The median of S is the (n+1)/2th smallest number of this set - i.e., the number in the middle of the set once the set is sorted. For example, if S = [70, 10, 20, 60, 30], then the sorted set is [10, 20, 30, 60, 70], from which we see that the median is 30. There is an obvious linearithmic algorithm to determine the median of S. First you sort the set, which takes O(n log n) time. Then you output the value of S[(n+1)/2}, which takes O(1) time. But is this the best we can do? Here is a bold claim: there is an O(n) algorithm to determine the median of set S. Determine whether the above claim is TRUE or FALSE.