Question: 1. Given a string u * over an alphabet show a recursive function that calculates the length of u, that is, find the number

1. Given a string u ϵ ∑* over an alphabet show a recursive function that calculates the length of u, that is, find the number of symbols in u. Indicate the base step, the recursive step and the closure property

2. Given two strings u, v ϵ ∑* over an alphabet ∑ show a recursive function that calculates the string w = uv, built from the concatenation of u and v. Is w a member of ∑*?. Indicate the base step, the recursive step and the closure property

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1 Recursive Function to Calculate the Length of a String To find the length of a string u we define a recursive function lengthu This function counts ... View full answer

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