Question: Prove that for any regular languages A and B, L1 = {*Ry* A, Y E B} is regular, where xR is the reversal of x.

Prove that for any regular languages A and B, L1 =

Prove that for any regular languages A and B, L1 = {*Ry* A, Y E B} is regular, where xR is the reversal of x. Prove also that L2 = {xPyx | x A, Y E B} is not regular

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