I am arguing with my TA aboutt this question. I have researched the answer for XNOR and XOR independently for ANN to set up. So I found the answer for XOR and XNOR respectively are
Y1 = (X1 AND ~X2) OR (~X1 AND X2) for XOR
Y2 = (X1 AND X2) OR (~X1 AND ~X2) for XNOR
Yet can we just do a negation of XOR to get XNOR such as
Y3 = ~ ((X1 AND ~X2) OR (~X1 AND X2))
I haven't found anything that using the implementation above so I could be wrong. If so let me know what you all think or any resources would be helpful. Thank you so much.