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DescriptionSinusoidal spirals.svg
English: Comparison of sinusoidal spirals: equilateral hyperbola (n = −2), line (n = −1), parabola (n = −1/2), cardioid (n = 1/2), circle (n = 1) and lemniscate of Bernoulli (n = 2), where rn = 1n cos(nθ) in polar coordinates and their equivalents in rectangular coordinates.
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