LOGARITHMIC SPIRAL

Polar equation: , k being the cotangent of the constant polar tangential angle: . Complex parametrization: . Transcendental curve. Curvilinear abscissa and intrinsic equation 2: , s being counted from the asymptotic point O. Radius of curvature: .  Intrinsic equation 1: . Intrinsic equation 2:  (with ). Pedal equation: .

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