ASSIGNMENT 2. 1. How do you distinguish between positive and negative logic sistems? Prove that an OR gate in a positive logic system is an AND gate in a negative logic system 2. Give brief statements that would help one remember the truth table of AND NAND, OR NOR EX-OR and EX-NOR logic gate tinctions, irrespective of the number of inputs used 3. How can you implement a NOT circuit using a two-input EX- ORER How do you implement three-input and four-input EX-OR logic functions with the help of two-input EX-OR gates? 5. Show the logic arrangement for implementing a four-input AND gate using two-input AND gates only 6. How would you hardware-implement a four-input OR gate g-input OR gates only GOOD-LUCK​