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Re: how can i draw somethinglike ...

yaroslav.mail at schrieb:
> hi all !
> i want to draw the quadratic surface of the folowing equation
> x^2 - z^2 = 1
> in Mathematica
> thanks
Hi Yaroslav,

another way to do this is (since sinh^2(t)-cosh^2(t)=1):

ParametricPlot[{Sinh[t],u,Cosh[t]},{t,-2,2}, {u,-Cosh[2]/2,Cosh[2]/2}]

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