Let Σ = {a, b} be an alphabet and let · denote concatenation. Compute (ba · ε) · abb, where ε is the empty word.
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Let Σ = {a, b} be an alphabet and let · denote concatenation. Compute (ba · ε) · abb,
where ε is the empty word.
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- Let Σ = {a, b} be an alphabet and let · denote concatenation. Compute (ba · ε) · abb,where ε is the empty word. I got baabb, but why is it baaab?Set Let S = {1, 4} and T = {a, b, c}, computer: S X T = S X S = |T| = T − S = P(S) =If b is a unit modulo m and a is another unit with a=b^d (mod m), we say that d is the _________ of a modulo m to the base b and write d =___________.
- For the definition of x ∈ EXPR , na(x) denotes the number of a’s in the string, and we will use nop(x) to stand for the number of operators in x (the number of occurrences of + or ∗). Show that for every x ∈ EXPR, na(x)= 1 + nop(x).Let p = “Sophie has been arrested” and q = “Bubba’s never been arrested.” Write the symbolic form of You’re saying that Sophie’s been arrested? That is totally not true. (A) ~q (B) p (C) ~(~p) (D) ~pA finite sequence of symbols from a given alphabet will be called a string over the alphabet. A string that consists of a sequence a1, a2, a3, a4, … … … … , an of symbols will be denoted by the juxtaposition a1 a2 a3 a4 … … … … an. Given the strings: u = a2bab2and v = bab2, Evaluate the following operations for strings: (i) ԑu(ii) u + v(iii) u(u| v)(iv) v | (v | u)
- Take a sentence and as well as a word/character(s) and return True if the word/character(s) can be found in the sentence. Sample Parameter(s): "chicken", "z" Sample Return: FalseLet s be a string of length 2 with characters from {0, 1, 2}, and define statements a, b, c, and d as follows:a = “the first character of s is 0”b = “the first character of s is 1”c = “the second character of s is 1”d = “the second character of s is 2”. Describe the set of all strings for which each of the following is true.A geometric sequence is a sequence of numbers where each term after the first isfound by multiplying the previous one by a fixed, non -zero number calledthe common ratio. For example, the sequences2, 6, 18, ....3,15,75, ….are a geometric sequences with common ratios 3 and 5 respectively. A geometricsequence is generally characterized by three numbers, the first term ‘a’, thecommon ratio ‘r’ and the number of terms ‘n’. A geometric series is the sum ofnumbers in a geometric sequence. 2+6+18 and 3+15+75 are examples of geometricseries with three terms each.The nth term of a geometric series with initial value ‘a’ and common ratio ‘r’ isgiven by: ?? = ???-1. While the sum of a geometric series is given by:?(1 - ??)1 - ?Create a class GeometricSeries to model a Geometric series. Using friend function,overload the ‘~’ operator to find the nth term of the series. Likewise, overload the‘!’ operator (using a friend function) to find the sum of a Geometric series.Provide a function display() in…
- c) Using the string T = “EVERY GOOD BOY DESERVES FAVOUR”, find the following:SUBSTRING(T,24,6)//” “// SUBSTRING(T,7,8)// SUBSTRING(T,18,1)A finite sequence of symbols from a given alphabet will be called a string over the alphabet. A string that consists of a sequence a1, a2, a3, a4, … … … … , ?? of symbols will be denoted by the juxtaposition a1 a2 a3 a4 … … … … ??. Given the strings: ? = a2bab2and v = bab2, Evaluate the following operations for strings: (i) ԑu(ii) u + v(iii) u(u| v)(iv) v | (v | u)Let p, q, and r be the propositions p: You started a new video game this week. q: You finished all its quests.r: You didn’t win the platinum trophy.Express each of these propositions as an English sentence.¬p → ¬q(p ∧ q) → (¬r)((¬p) → (¬q)) ∨ (q → (¬r))(p ∧ q) ∨ (¬q ∧ r)