Question $8$

a$)$ Distinguish between Decompiler and Language rewriter.

b$)$ Obtain the regular expressions for the following:

$($i$).\{a^{4n+3},n0\}$

$($ii$).\{a,a^4,a^8,$dots$\}$

$\backslash$table$[[\backslash$table$[[$Major Ternic$],[$Regular Expressions$]],,]]$

$($c$)$ Explain the four kinds of errors that a program may have at various stages of the compilation process.

$\backslash$table$[[$Introduction & Phaser Topit$]]$

i$)$ The machine below recognizes words over the alphabet set comprising $,=\{a,b\}.$

Determine the language that it recognizes. $$

$\backslash$table$[[\backslash$table$[[$Major Topic$],[$Finite Automata$]],,3]]$