Consider a dataset with the following six $1-$dimensional points $($the first element of the couple is

the value $x$ while the second is the label $y)$:

$\{(x_i,y_i)\}=\{(-3,+1),(-2,+1),(-1,-1),(1,-1),(2,+1),(3,+1)\}$

Consider mapping these points to $2$ dimensions using the mapping $$:$x(x,x^2)$

Which is the maximum margin decision boundary? Which is the corresponding margin?