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Перевод: parabola
[существительное] парабола
Тезаурус:
- The overlap of the series of lines QR forms the envelope of the parabola.
- The parabola
- The parabola is the section of a right circular cone on a plane parallel to the slope of the cone.
- The name parabola , meaning equal, derives from the work of Appollonius (circa 250 BC).
- An ellipse, and the other conic sections, the parabola and the hyperbola, as discussed in Chapter 11, offer beautiful transition curves.
- The area bounded by a parabola is two-thirds of the rectangle having the same base and height.
- The parabola has the important property of reflecting to its focus all lines parallel to the x axis.
- Properties of a parabola
- To draw a parabola with an included angle exceeding 140, draw two straight lines and mark on each a series of equal intervals.
- Distance a locates the focus of the parabola on the x axis.
- To draw a parabola
- The Cartesian equation for a horizontal parabola is usually given as y = 4 ax , where the vertex of the parabola passes through the origin and the curve has one-fold symmetry about the positive x axis.
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