$(4)$

Answer: $?$

g

$R_0{}_0=$

$(9)longrightarrow{C}^b(0{)}^b(5)$

How? $2$

$($O$)e^a$

$(b{a}^{**}a+a{b}^{**}b{)}^{**}(b{a}^{**}+a{b}^{**})$

$(10)$ What is the purpose of peurping leumer in the centeat of Regular exporesion? Using Pumping leamua prove that he $(10)$ language

$\{\begin{array}{ccc}\text{:}A=\{YY|yin\{0,& 1{\}}^{**}\}in\text{N}\text{O}\text{T}\text{R}\text{E}\text{q}\text{u}\text{L}\text{A}\text{R}& \end{array}$