Define eccentricity?

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+2 Mathematics Conic Sections

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Srinivasa Reddy

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Eccentricity is define as the ratio of the distance of any point on a conic section from a focus to its distance from the corresponding directrix and it is denoted with "e"; e range from 0 to 1; 0 < e <1.
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An Experienced Trainer

The eccentricity is always denoted by e. e = (the distance of a point on a conic section from the focus ) / (its distance (that point on the conic section) from the directrix). When e = 1, the conic is a parabola; When e 1, it is a hyperbola.
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Physics Faculty

Eccentricity(e) is defined as the ratio of focal length(distance of focus from centre) to the semi major axis. e1(Hyperbola).
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10 years Experience in teaching

Parameter associated with conic section. Eccentricity of Circle is zero.
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PCM

A circle has an eccentricity of zero, so the eccentricity shows you how "un-circular" the curve is. Bigger eccentricities are less curved. At eccentricity = 0 we get a circle for 0 1 we get a hyperbola for infinite eccentricity we get a line.
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A circle has an eccentricity of zero, so the eccentricity shows you how "un-circular" the curve is. Bigger eccentricities are less curved. At eccentricity = 0 we get a circle for 0 < eccentricity < 1 we get an ellipse for eccentricity=1 we get a parabola for eccentricity> 1 we get a hyperbola for infinite eccentricity we get a line. read less
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