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Given the following recursive definition of R (string reverse): where x e * and a E , prove that XRR-x. Do not forget to provide

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Given the following recursive definition of R (string reverse): where x e * and a E , prove that XRR-x. Do not forget to provide the justification for each line of your proof. ( Note: zRR is the reverse of the reverse of z, ie, RR-( rR)R )

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