MATLAB Problem with drawing a function in MATLAB

[Physics_rocks]

hi guys ,

I'm trying to draw the following function , however MATLAB doesn't like my code . What am I doing wrong ?

z = x + (y – 100)^2

where x = -50 : 50,
y = 0 : 200


my code :

[x,y]=meshgrid(-50:1:50,-0:1:200)
surf(x , y , x. + (y.-100)^2)

thank you

 

[matonski]

You have the dots in the wrong place

surf(x , y , x + (y-100).^2)