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Need to graph the lemniscate of. Bernoulli in geogebra 3d in the xy plane at z=5. I know how to graph the cartesian equation but not at z=5.

User3910
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    as a parametric curve? e.g Curve[sqrt(2)*cos(t)/(sin(t)^2 + 1), sqrt(2)*cos(t)*sin(t)/(sin(t)^2 + 1), 5, t, 0, 2*Pi] – achille hui May 10 '18 at 17:17

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The variable, $a$ just controls the size of the figure. use this with correct multiplication signs as shown in the math.

Curve(a sqrt(2) cos(t) / (sin(t)² + 1), a sqrt(2) cos(t) sin(t) / (sin(t)² + 1), 5, t, 0, 2π)

$$\left(a\sqrt{2} \cdot \frac{\operatorname{cos} \left( t \right)}{\operatorname{sin} ^{2}\left( t \right) + 1},a \sqrt{2} \; \operatorname{cos} \left( t \right) \; \frac{\operatorname{sin} \left( t \right)}{\operatorname{sin} ^{2}\left( t \right) + 1}, 5 \right)$$

Narlin
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