Σ = {a, b}, Consider set of strings consisting of a’s and b’s starting with the string bab and even number of b’s and odd number of a’s, write down Regular expression and define Recursive Language for it.

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.

answersecurity intrusion;