title: Equation for 3D graphing of ellipsoid with that has 2 open ends opposite each other
body: <p>The equation (X^2)/25+(Y^2)/25+(Z^2)/2=1 yields a 3D ellipsoid figure on WolframAlpha. However I am trying to find out how to enter an equation that will give me a form with the ellipsoid open at 2 ends.  One way would be to restrict the domain of x such that x is between -3.5 and 3.5 .  But I can't figure out the notation for that in the WolframAlpha text box.  Any suggestions?</p>