Eccentricity (mathematics)

All types of conic sections, arranged with increasing eccentricity. Note that curvature decreases with eccentricity, and that none of these curves intersect.

Ellipse and hyperbola with constant a and changing eccentricity e.

Ellipses, hyperbolas with all possible eccentricites from zero to infinity and a parabola on one cubic surface.

In mathematics, the eccentricity, denoted e or $\varepsilon$ , is a parameter associated with every conic section. It can be thought of as a measure of how much the conic section deviates from being circular.

In particular,

Furthermore, two conic sections are similar (identically shaped) if and only if they have the same eccentricity.

单词	First eccentricity
释义	First eccentricity 英语百科 Eccentricity (mathematics) In mathematics, the eccentricity, denoted e or $\varepsilon$ , is a parameter associated with every conic section. It can be thought of as a measure of how much the conic section deviates from being circular. In particular, Furthermore, two conic sections are similar (identically shaped) if and only if they have the same eccentricity.
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First eccentricity

Eccentricity (mathematics)