4:50 LTE Back homework2-1-1.docx CSC 225 Diserete Structures for Computer Science Home Work 2 Please submit your solutions through Canvas. Write your solutions in word document and upload it to canvas. Due Date: FEB 7, 2019. 1. Use truth table to establish the Modus tollens tautelogy 2. Write Modus ponens in symbolic form and establish modus ponens tautology using truth table? 3. What is contingency and write a truth table that is an example of contingeney 4. What are the uses of derivation rules? Write one equivalence rule in symbolic form that we learned in class on Tuesday? Dashboard Calendar To DoNotifications nbox