RPN (65 %) RPN or reverse Polish notation is the postfix arithmetic expression where operator is put after the operands such as 1 2 + (which means 1 + 2 or 3). You have learned on how to evaluate a valid postfix expression, how to tell if a postfix expression is valid or not, how to convert a valid infix expression to a valid postfix expression, manually, or through a stack etc. 1. (40 %) Convert infix to postfix (a) (20%) Convert this infix expression with parenthesis to postfix. You do not have to follow the steps of the algorithm in the book to do the conversion (you can do manually or by inspection) 5 * (5 (5 - (5 + 5) * (5 + 5))). (b)(10%) After conversion, evaluate the postfix expression. (C)(10%) Verify that agrees with the result of using infix expression. +