Conic Sections Class 11 Notes

Conic sections get their name because they can be generated by intersecting a plane with a cone. A cone has two identically shaped parts called nappes. One nappe is what most people mean by “cone,” having the shape of a party hat.

Conic sections or sections of a cone are the curves obtained by the intersection of a plane and cone. There are three major sections of a cone or conic sections: parabola, hyperbola, and ellipse (the circle is a special kind of ellipse.).

When we slice a cone, the cross-sections can look like a circle, ellipse, parabola, or a hyperbola. These are called conic sections, and they can be used to model the behavior of chemical reactions, electrical circuits, and planetary motion.

Conic Sections Class 11 Notes 3

Conic sections received their name because they can each be represented by a cross section of a plane cutting through a cone. The practical applications of conic sections are numerous and varied. They are used in physics, orbital mechanics, and optics, among others.

Conic Sections Class 11 Notes 4

A conic section, conic or a quadratic curve is a curve obtained from a cone's surface intersecting a plane. The three types of conic section are the hyperbola, the parabola, and the ellipse; the circle is a special case of the ellipse, though it was sometimes considered a fourth type.

Conic Sections Class 11 Notes 5

Conic Section a section (or slice) through a cone. ... So all those curves are related.

Conic section, in geometry, any curve produced by the intersection of a plane and a right circular cone. Depending on the angle of the plane relative to the cone, the intersection is a circle, an ellipse, a hyperbola, or a parabola.

Conic Sections Class 11 Notes 7