Question: 3. 10 points total; each part 2.5 points Give a recursive definition of the set of free variables of a formula . i.e., those variables

3. 10 points total; each part 2.5 points Give a recursive definition of the set of free variables of a formula . i.e., those variables with at lea t une free occurrence in p, as described in the video. To do so, fil: in the que tion i ack : in the following template (note that we do not assume that the met w ri wles a and y ofer to distinct variables, so you need to analyze the case where r = y . nd the ca e where ja) . is a free variable o. P(y' if ? (b) x is a free variable of w iff ? (c) for HEA, V, +. ), I is a free variable of # w if

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