Question

Any one please answer my question it's an emergency please don't spam

is anyone in online​

Answer 1

For the set of possible values of an expression, , one needs to consider the corresponding set of states of the execution and form the set of values of e, each evaluated in one of those states. Importantly, all values of program variables used in e are sampled in a single state for each evaluation.

Answer 2

To evaluate an algebraic expression, you have to substitute a number for each variable and perform the arithmetic operations. In the example above, the variable x is equal to 6 since 6 + 6 = 12. If we know the value of our variables, we can replace the variables with their values and then evaluate the expression.