7.5 setborder 90 setangle_repere -0.5 1.5 setxrange -0.5 1.5 setyrange 1 1 settkstep .5 .5 setsubtkstep 2 2 setmkstep 100 setxunit [1 1 .5 .5 .1 .1] {orange} Quadrillage .7 setlinewidth ticks subticks marks traceaxes axesarrow unites /f {setxvar #rpn# x+0.5 } def /g {setxvar #rpn# x-0.5 } def /h {setxvar #rpn# x } def gsave noir .75 setlinewidth continu 0 0.5 {f} Courbe grestore gsave noir .75 setlinewidth continu 0.5 1 {g} Courbe grestore gsave noir .75 setlinewidth continu 0 1 {h} Courbe grestore setTimesItalic (O) O drtext setTimes (x) 1.4 0.08 cctext setTimes (y) -0.1 1.4 cctext setTimes (1) 1 -0.1 cctext setTimes (1) -0.1 1 cctext