How do you plot a surface in matlab?

I was trying the whole night to plot the surface described by x^2-y^2-z^2=1.....This program is sooo hard to use!! could anyone give a solution? Thanks a lot.

Answer 1

[Youssef Khmou]

There several tutorials that illustrate how to make a graph of f(x,y), here is simple example :

 [x,y]=meshgrid(-1:0.1:1);
 z=sqrt(1+x.^2+y.^2);
 surf(x,y,abs(z))

[Yue Li]

Isn't this problematic? Because you are really missing the negative part of this graph....Also, may I ask how did you learn all this? I spent all night, and never made any progress of such....

[Youssef Khmou]

remove the absolute value >>surf(x,y,z). start by learning simple tutorials.

[Yue Li]

Thanks a lot!