How to Plot the parametric space curve of matlab

How to Plot the parametric space curve of z=-7/(x^2+y^2+1) , -5<=x<=5 , -5<=y<=5

Answer 1

[KSSV]

x = linspace(-5,5) ; 
y = linspace(-5,5) ;
[X,Y] = meshgrid(x,y) ; 
Z=-7./(X.^2+Y.^2+1)  ; 
surf(X,Y,Z)