Question: Find an error in the following proof and explain why it is an error. (a) Proving P(x)xP(x) (1) P(x) - premise (2) xP(x) - universal

Find an error in the following proof and explain why it

Find an error in the following proof and explain why it is an error. (a) Proving P(x)xP(x) (1) P(x) - premise (2) xP(x) - universal generalization (b) Proving xP(x)yP(y) (1) xP(x) - premise (2) P(y) - existential instantiation (y in a new free variable name) (3) yP(y) - universal generalization

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