If $L$ is a regular language then is $L'=\{w \mid wx \in L \text{ for some string }x\}$ regular?
First step is understand $L'$. So it is a subset of $L$ that contains strings with a certain prefix?
If $L$ is a regular language then is $L'=\{w \mid wx \in L \text{ for some string }x\}$ regular?
First step is understand $L'$. So it is a subset of $L$ that contains strings with a certain prefix?
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