Let f(n) and g(n) be positive functions over the natural numbers. For each of the following claims either prove formally that the claim is correct, or disprove it by giving a counter example. a) f(n) is e(f(n/2)) . b) f(n) + g(n) is E(min(f(n),g(n)). c) f(n) + g(n) is E(max(f(n),g(n)). d) if f(n)f(n) is O(n) then f(n) is O(n).
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- Prove using the concept of interpretations and the value of a formula vI under an interpretation I that [∀x p(x) ∨ ∃x q(x)] → ∃x[p(x) ∨ q(x)] is valid.Prove that it is logically equal using common equivalent proposition. 1. ¬[p v (¬p ˄ q) ≡ (¬p ˄ ¬q) 2. p → (q ˄ ¬r)1. Show that (p ∧ q) → r and (p → r) ∧ (q → r) is logically equivalent.
- Please help me with these question. SHow all you work. Thank you 1. Prove that∀k ∈ N, 1k + 2k + · · · + nk ∈ Θ(nk+1). 2. Suppose that the functions f1, f2, g1, g2 : N → R≥0 are such that f1 ∈ Θ(g1) and f2 ∈ Θ(g2).Prove that (f1 + f2) ∈ Θ(max{g1, g2}).Here (f1 + f2)(n) = f1(n) + f2(n) and max{g1, g2}(n) = max{g1(n), g2(n)}Let A = {x ∈ Z : x ≤ 3} and let B = {x ∈ Q : x2 = 9}. Is B ⊆ A? Give a brief reason for your answer.Let R=ABCDEGHK and F= {ABK→C, A→DG, B→K, K→ADH, H→GE} . Is it in BCNF? Prove your answer.
- Please answer the following question in depth with full detail. Suppose that we are given an admissible heuristic function h. Consider the following function: 1-h'(n) = h(n) if n is the initial state s. 2-h'(n) = max{h(n),h'(n')−c(n',n)} where n' is the predecessor node of n. where c(n',n) min_a c(n',a,n). Prove that h' is consistent.Rank the following functions based on their asymptotic value in the increasing order, i.e., list themas functions f1, f2, f3, . . . , f9 such that f1 = O(f2), f2 = O(f3), . . . , f8 = O(f9). Remember to writedown your proof for each equation fi = O(fi+1) in the sequence above. Functions: √n, log n, nlog n, 100n, 2n, n!, 9n, 33^3^3, n/log^2 nGive a proof by contradiction that given integers j and k where j ≥ 2 that thenj is not divisible by k or(∨) j is not divisible by (k + 1).
- 1. The Fibonacci numbers F(0), F(1), F(2), are defined by the recurrence relation:F(0) = 0,F(1) = 1,F(n) = F(n-1) + F(n-2) for n >= (greater than or equal to) 2.The first few Fibonacci numbers are 0, 1, 1, 2, 3, 5, 8, 13, and 21. Prove by induction that for all n >= (greater than or equal to) 1.[F(n-1)][F(n+1)] - F(n)2 = (-1)n.Hint: Express F(n-1) in terms of F(n)and F(n-2) and express F(n+1) in terms of F(n) and F(n-1). Expand and simplify, then apply the inductive hypothesis. Handwritten onlyAnswer the following: This problem exercises the basic concepts of game playing, using tic-tac-toe (noughts and crosses) as an example. We define Xn as the number of rows, columns, or diagonals with exactly n X’s and no O’s. Similarly, On is the number of rows, columns, or diagonals with just n O’s. The utility function assigns +1 to any position with X3=1 and −1 to any position with O3=1. All other terminal positions have utility 0. For nonterminal positions, we use a linear evaluation function defined as Eval(s)=3X2(s)+X1(s)−(3O2(s)+O1(s)). a. Show the whole game tree starting from an empty board down to depth 2 (i.e., one X and one O on the board), taking symmetry into account. b. Mark on your tree the evaluations of all the positions at depth 2. c .Using the minimax algorithm, mark on your tree the backed-up values for the positions at depths 1 and 0, and use those values to choose the best starting move. Provide original solutions including original diagram for part a!Answer the following: This problem exercises the basic concepts of game playing, using tic-tac-toe (noughts and crosses) as an example. We define Xn as the number of rows, columns, or diagonals with exactly n X’s and no O’s. Similarly, On is the number of rows, columns, or diagonals with just n O’s. The utility function assigns +1 to any position with X3=1 and −1 to any position with O3=1. All other terminal positions have utility 0. For nonterminal positions, we use a linear evaluation function defined as Eval(s)=3X2(s)+X1(s)−(3O2(s)+O1(s)). a. Show the whole game tree starting from an empty board down to depth 2 (i.e., one X and one O on the board), taking symmetry into account. b. Mark on your tree the evaluations of all the positions at depth 2. c .Using the minimax algorithm, mark on your tree the backed-up values for the positions at depths 1 and 0, and use those values to choose the best starting move. Provide original solution!