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3 Cards in this Set

  • Front
  • Back

Unit tangent vector

T = r'(t) /|r'(t)|

Curvature of a vector

K(t)= | T'(t) / r'(t)|

Curvature of a function vector whatever

K(t) = |r'(t) x r"(t)|/(|r'(t)|^3)