🚀 go-pugleaf

Hi Matlab expert,

I am trying to make a contour plot of a hyperparaboloid of a
two-variable function. The equation look like this:

 z = 2*w0^2 + 3*w1^2 - 12*w0 - 8*w1 + 2*w0*w1 + 36

The minimum of z(w0,w1) is z(2.8,0.4)=17.6.

I entered the following lines in matlab:
	
  [w0,w1]=meshdom(-5:.1:5,-5:.1:5);
  z = 2*(w0.^2) + 3*(w1.^2) - 12*w0 - 8*w1 
      + 2*(w0.*w1) + 36*ones(w0);
  contour(z)

Instead of contours (these contours are ellipses) centered at (2.8,0.4)
with a z-value of 17.6,  I got the contours centered at around
(85,60).

Could someone please let me know what I have done wrong.

Thanx a lot. 

New Matlab user,
*****************************************************************
*  Dennis Woo              Department of Mechanical Engineering *
*  E-mail: dwoo@unb.ca     University of New Brunswick          *
*  Tel: (506) 453-4513                                          *
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