infinity in an inequality for input in a function?

x = 0:0.5:inf
y = 1:-0.5:inf

I am trying generally to plot in 3D

and the values of x and y are the in the inequality above

but I didn't know how to translate x >= 1 means infinity

does it actually means infinity?

[Torsten]

0 <= x,y <= 1 

means that x as well as y are numbers in the interval [0,1].

I don't know how infinity comes into play here.

Answer 1

[KSSV]

x = 0:0.05:1 ;    % x = linspace(0,1,100) ; 
y = 0:-0.05:1 ;   % y = linspace(0,1,150) ;
[X,Y] = meshgrid(x,y) ;
mesh(X,Y)

[Jehan Alsulaiman]

x's maximum is not 1

and y should the least it should be 1 and less but not necessarily zero