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Consider the following FAs with the regular expressions r 1 (for FA 1 ) and r 2 (for FA 2 ). By applying Kleenes theorem,

Consider the following FAs with the regular expressions r1 (for FA1) and r2 (for FA2).

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By applying Kleenes theorem, an FA must be built for the regular expression r1r2. In the process a transition table is compiled. Which one of the following tables is the correct table in the solution for this problem?

  • A.
    New state Read an a Read an b
    -z1 = x1 z2 z3
    z2 = x3 or y1 +z4 +z4
    z3 = x2 z3 z3
    +z4 = x3 or y1 or y2+ +z4 +z4

  • B.
    New state Read an a Read an b
    -z1 = x1 or y1 z2 z3
    +z2 = x3 or y1 or y2+ +z4 +z4
    z3 = x2 z3 z3
    +z4 = y2+ +z4 +z4
  • C.
    New state Read an a Read an b
    -z1 = x1 z2 z3
    z2 = x3 z4 z4
    z3 = x2 z3 z3
    z4 = x3 z5 z5
    z5 = y1 z5 z6
    +z6 = y2+ z6 z6

  • D.
    New state Read an a Read an b
    -z1 = x1 or y1 z2 z3
    +z2 = x3 or y2+ +z4 +z4
    z3 = x2 z3 z3
    +z4 = x3 or y2+ +z4 +z4

a + a, b a, b a, b X1 X3 Y1 Y2 b FA FAZ X2 a, b

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