How to plot an arc or parabola

I just started learning matlab and I have found plotting an arc and parabola very difficult no matter how hard I read previously posted questions about it. Here is a picture of what I wanna try to plot with the arcs hand drawn using paint. However am gonna use one side as an example (the parabola in red). My start point=[2,10], critical point=[4,9], end point=[5,10]. Thank you

Answer 1

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/72119-matlab-how-to-create-a-parabolic-arc