%% auteur : 50 setxunit %9.5 setborder 90 setangle_repere -0.5 6 setxrange -1 6 setyrange 1 1 settkstep %.5 .5 setsubtkstep 1 1 setmkstep ticks subticks marks traceaxes axesarrow unites /g {setxvar #rpn# x^(-0.5) } def 0.0001 6 {g} Courbe $\alpha <0 $ boxit 5 1 [1.3 dup] dctexlabel