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For a parametrically defined curve, its negative pedal curve with pedal point (0; 0) is defined as
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510:{\displaystyle Y={\frac {(x^{2}-y^{2})x'+2xyy'}{xy'-yx'}}}
379:{\displaystyle X={\frac {(y^{2}-x^{2})y'+2xyx'}{xy'-yx'}}}
223:. For a given curve in the plane and a given fixed point
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552:Negative pedal curve on Mathworld
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649:Pedal & Contrapedal curves
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693:Binary operations
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527:pedal curve
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211:other than
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741:Categories
717:Operations
615:Dual curve
539:Fish curve
521:Properties
243:for which
203:Definition
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683:Strophoid
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107:June 2012
34:does not
726:Envelope
702:Roulette
610:Involute
533:See also
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237:envelope
187:to line
145:geometry
707:Cissoid
664:Caustic
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605:Evolute
235:is the
183:and is
177:tangent
138:limaçon
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55:removed
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747:Curves
231:, the
134:Circle
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151:is a
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84:books
147:, a
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143:In
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241:XP
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