两个命令 \psplot 有什么区别?
\documentclass[border=10pt,pstricks,12pt]{standalone} \usepackage{pst-plot} \begin{document} \begin{pspicture}[unit=2cm](-3,-3)(3,3) \psline{->}(-1.5,0)(1.5,0) \uput[-90](1.5,0){$x$} \psline{->}(0,-1.5)(0,1.5) \uput[0](0,1.5){$y$} %%%%% \uput[-135](-1,0){$-1$} \uput[-45](1,0)...