Sinusoidal Spirals
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Sinusoidal spirals are given by the equation , where s is rational. They are not spirals; perhaps the name comes from the similar form of the equation for the logarithmic spiral, . Change the values of s and a to see the various resulting curves, including hyperbolas, parabolas, cardioids, and lemniscates.
Contributed by: Rob Morris (March 2011)
Open content licensed under CC BY-NC-SA
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"Sinusoidal Spirals"
http://demonstrations.wolfram.com/SinusoidalSpirals/
Wolfram Demonstrations Project
Published: March 7 2011