Here is my code:
implicit_plot([x=-log(y),x=-sqrt(y),y=0,y=1,y=%e],[x,-5,5],[y,-5,5]);
That's what goes after I press shift+enter:
(%o258) implicit_plot([x=-log(y),x=-sqrt(y),y=0,y=1,y=%e],[x,-5,5],[y,-5,5])
This code just doesn't execute! Why?
Oh, finally found out myself, I should have write
load(implicit_plot);