Consider the two class classification task that consists of the following points:
Class $C_1: [-1, -1], [-1, 1], [1, -1]$
Class $C_2: [1,1]$
The decision boundary between the two classes $C_1$ and $C_2$ using single perception is given by:
- $x_1-x_2-0.5=0$
- $-x_1-x_2-0.5=0$
- $0.5(x_1+x_2)-1.5=0$
- $x_1+x_2-0.5=0$