Conic sections
You may enter a conic section as a quadratic equation in x and y. Prior defined variables (e.g. numbers, points, vectors) can be used within the conic’s equation.
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The conic section’s name can be entered at the beginning of the input, followed by a colon. |
Examples
| Conic section | Input |
|---|---|
Ellipse ell |
ell: 9 x^2 + 16 y^2 = 144 |
Hyperbola hyp |
hyp: 9 x^2 – 16 y^2 = 144 |
Parabola par |
par: y^2 = 4 x |
Circle c1 |
c1: x^2 + y^2 = 25 |
Circle c2 |
c2: (x – 5)^2 + (y + 2)^2 = 25 |
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If you define two parameters a = 4 and b = 3 in advance, you may enter for example an ellipse as
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