Differential Geometry

Essential formulas and concepts in differential geometry

Curvature of a Plane Curve

\(\displaystyle \kappa(x) = \frac{|y''(x)|}{\big(1 + [y'(x)]^2\big)^{3/2}}\)

Variables:

Description/Usage:

Mathematical concept visualization

Arc Length of a Curve

\(L = \displaystyle \int_{x=a}^{b} \sqrt{1 + [y'(x)]^2}\,dx\)

Variables:

  • \(y'(x) is the derivative (slope) of the curve y(x); the integral is evaluated from x=a to x=b, the x-coordinates of the endpoints of the curve segment.\)

Description/Usage:

Mathematical concept visualization