用 MatLab,Mathematics,MathCAD,Maple,Excel 或几何画板等软件均可绘制函数图象。手机 App 有 Math Grapher 等。
以下是用 Maple 绘制的。命令如下:
with(plots):
implicitplot([y^2 = x, y = x-2], x = -5 .. 5, y = -5 .. 5, scaling = constrained, numpoints = 10000, color = [red, blue], legend = [y^2 = x, y = x-2]);