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The equation is:

[tex]

\frac{y^2}{2}- \frac{x^2}{4} - \frac{z^2}{9} = 1

[/tex]

And what I have is

[tex]

y= \sqrt{2}*sec(t)*sec(s)

[/tex]

[tex]

x=2*tan(t)*sec(s)

[/tex]

[tex]

z=3*tan(s)

[/tex]

I am then suppose to write the maple code and send it to my instructor. The problem is that when I do the plot3d with those equations I get a strange looking thing that looks nothing like what a hyperbolic paraboloid should look like. I did the implicitplot3d for the equation to see what it should look like so I know I am way off.

Can anyone offer me any hints?

Thanks