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  2. Arc length - Wikipedia

    en.wikipedia.org/wiki/Arc_length

    Arc length is the distance between two points along a ... then it is simply a special case of a parametric equation ... Calculus Study Guide – Arc Length ...

  3. Torsion of a curve - Wikipedia

    en.wikipedia.org/wiki/Torsion_of_a_curve

    Animation of the torsion and the corresponding rotation of the binormal vector. Let r be a space curve parametrized by arc length s and with the unit tangent vector T.If the curvature κ of r at a certain point is not zero then the principal normal vector and the binormal vector at that point are the unit vectors

  4. Calculus of variations - Wikipedia

    en.wikipedia.org/wiki/Calculus_of_Variations

    Marston Morse applied calculus of variations in what is now called Morse theory. [6] Lev Pontryagin, Ralph Rockafellar and F. H. Clarke developed new mathematical tools for the calculus of variations in optimal control theory. [6] The dynamic programming of Richard Bellman is an alternative to the calculus of variations. [7] [8] [9] [c]

  5. Archimedean spiral - Wikipedia

    en.wikipedia.org/wiki/Archimedean_spiral

    2 Arc length and curvature. 3 Characteristics. 4 General Archimedean spiral. 5 Applications. 6 Construction methods. ... leading to the following parametric equations

  6. Differentiable curve - Wikipedia

    en.wikipedia.org/wiki/Differentiable_curve

    A parametric C r-curve or a C r-parametrization is a vector-valued function: that is r-times continuously differentiable (that is, the component functions of γ are continuously differentiable), where , {}, and I is a non-empty interval of real numbers.

  7. Parametric surface - Wikipedia

    en.wikipedia.org/wiki/Parametric_surface

    Surfaces that occur in two of the main theorems of vector calculus, Stokes' theorem and the divergence theorem, are frequently given in a parametric form. The curvature and arc length of curves on the surface, surface area, differential geometric invariants such as the first and second fundamental forms, Gaussian, mean, and principal curvatures ...

  8. AP Calculus - Wikipedia

    en.wikipedia.org/wiki/AP_Calculus

    AP Calculus BC includes all of the topics covered in AP Calculus AB, as well as the following: Convergence tests for series; Taylor series; Parametric equations; Polar functions (including arc length in polar coordinates and calculating area) Arc length calculations using integration; Integration by parts; Improper integrals

  9. Line element - Wikipedia

    en.wikipedia.org/wiki/Line_element

    The coordinate-independent definition of the square of the line element ds in an n-dimensional Riemannian or Pseudo Riemannian manifold (in physics usually a Lorentzian manifold) is the "square of the length" of an infinitesimal displacement [2] (in pseudo Riemannian manifolds possibly negative) whose square root should be used for computing curve length: = = (,) where g is the metric tensor ...