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  2. Asymptote - Wikipedia

    en.wikipedia.org/wiki/Asymptote

    The graph of a function with a horizontal (y = 0), vertical (x = 0), and oblique asymptote (purple line, given by y = 2x) A curve intersecting an asymptote infinitely many times In analytic geometry , an asymptote ( / ˈ æ s ɪ m p t oʊ t / ) of a curve is a line such that the distance between the curve and the line approaches zero as one or ...

  3. Asymptotic curve - Wikipedia

    en.wikipedia.org/wiki/Asymptotic_curve

    The asymptotic directions are the same as the asymptotes of the hyperbola of the Dupin indicatrix through a hyperbolic point, or the unique asymptote through a parabolic point. [1] An asymptotic direction is a direction along which the normal curvature is zero: take the plane spanned by the direction and the surface's normal at that point. The ...

  4. Sigmoid function - Wikipedia

    en.wikipedia.org/wiki/Sigmoid_function

    A sigmoid function is constrained by a pair of horizontal asymptotes as . A sigmoid function is convex for values less than a particular point, and it is concave for values greater than that point: in many of the examples here, that point is 0.

  5. Gompertz function - Wikipedia

    en.wikipedia.org/wiki/Gompertz_function

    The inverse function only produces numerical values in the set of real numbers between its two asymptotes, which are now vertical instead of horizontal like in the forward Gompertz function. Outside of the range defined by the vertical asymptotes, the inverse function requires computing the logarithm of negative numbers.

  6. Inflection point - Wikipedia

    en.wikipedia.org/wiki/Inflection_point

    Instead, they can change concavity around vertical asymptotes or discontinuities. For example, the function x ↦ 1 x {\displaystyle x\mapsto {\frac {1}{x}}} is concave for negative x and convex for positive x , but it has no points of inflection because 0 is not in the domain of the function.

  7. Generalised logistic function - Wikipedia

    en.wikipedia.org/wiki/Generalised_logistic_function

    Richards's curve has the following form: = + (+) /where = weight, height, size etc., and = time. It has six parameters: : the left horizontal asymptote;: the right horizontal asymptote when =.

  8. Asymptotology - Wikipedia

    en.wikipedia.org/wiki/Asymptotology

    The field of asymptotics is normally first encountered in school geometry with the introduction of the asymptote, a line to which a curve tends at infinity.The word Ασύμπτωτος (asymptotos) in Greek means non-coincident and puts strong emphasis on the point that approximation does not turn into coincidence.

  9. Limit of a function - Wikipedia

    en.wikipedia.org/wiki/Limit_of_a_function

    Their horizontal position is given by x, much like the position given by a map of the land or by a global positioning system. Their altitude is given by the coordinate y . Suppose they walk towards a position x = p , as they get closer and closer to this point, they will notice that their altitude approaches a specific value L .