Draw the curve in the x–y plane for which ||(x; y)||inf = 2

Draw the curve in the x–y plane for which ||(x; y)||inf = 2

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer

Answer 1

[Walter Roberson]

If you have R2016b or later, you can use fimplicit() to do the drawing. The appropriate anonymous function is not difficult once you know the definition of infinity norm.

For earlier versions there are a variety of ways, including creating a contour plot.

Answer 2

[Roger Stafford]

plot([-2,2,2,-2,-2],[-2,-2,2,2,-2],’y-‘)