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Questions asking us to check whether your solution is correct only are considered off-topic (per http://meta.cs.stackexchange.com/questions/597/). Please pinpoint your doubt and provide *a specific question* to which a meaty answer can resolve your doubt whether your answer is correct or not.

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Context Free Grammar for language L

Can someone help with this: $L=\{a^ib^j \mid i,j \ge 1 \text{ and } i \ne j \text{ and } i<2j\}$ I'm trying to write a grammar for this language? I tried this: $S \to S_1 \mid S_2 \\ S_1 \to aXb \\ …
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