theoro fuzzy
$$ \mu_N(e)=\begin{cases} 1+\frac{e}{0.5}, & -1 \le e \le -0.5 \label{eq:1} \\ \frac{-e}{0.5}, & -0.5 < e \le 0 \\ 0,& \text {aliws} \end{cases} $$