2. [10] What function is implemented by the schematic below? Hippo Rhino Giraffe Zoo Zebra 3. (10) What function is implemented by the schematic below? Give your answer in SOP form using only AND, OR, and NOT 4. [10] Using only NAND gates and inverters, draw a schematic for the function F(x, y, z) = x+y+ x yz + y 2. You do not need to minimize the function