\begin{Schunk}
\begin{Sinput}
 xseq <- seq(from = -4, to = +4, length.out = 500)
 pseq <- dlogis(xseq)
 plot(xseq, pseq, type = "l", xlab = "x", ylab = "Probability Density", ylim = c(0, 
      1), main = "")
\end{Sinput}
\end{Schunk}
