(2 points) Write the truth table of the formula A = ((a T) + b) (b + I). Specify its models and countermodels (if any) and state whether it is a satisfiable formula, a falsifiable formula, a tautology, or a contradiction. Find a formula which is logically equivalent to A but does not contain the atoms T and I. (2 points) Write the truth table of the formula A = ((a T) + b) (b + I). Specify its models and countermodels (if any) and state whether it is a satisfiable formula, a falsifiable formula, a tautology, or a contradiction. Find a formula which is logically equivalent to A but does not contain the atoms T and