Hi all, I got a problem related to postscript operators. I'm trying to plot the follow equation: 1/(x-1)^2 I thought I can express the equation as \psplot[plotstyle=curve,% linecolor=blue]% {1}{2.0}% {1 1 x sub 2 exp div} But, it does not work. :( I'd appreciate it if someone can point out what I need to change. Thanks.