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Hi, I need help with question 2.4 and 2.6. Please explain your answers clearly, thanks. 2.4. Show that (RIS) (RS*)* 2.5. Show that RS SR

Hi, I need help with question 2.4 and 2.6. Please explain your answers clearly, thanks.

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2.4. Show that (RIS) (RS*)* 2.5. Show that RS SR by giving a counterexample. 2.6. Show that (R|S)* (R S) by giving a counterexample OW

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