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.
Note: The conic section’s name can be entered at the beginning of the input followed by a colon.

 

Examples:

·        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

 

Note: If you define two parameters a = 4 and b = 3 in advance, you may enter for example an ellipse as ell: b^2 x^2 + a^2 y^2 = a^2 b^2.


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