Polar Parametric Curves

Description

This interact allows the user to adjust the values $n_1, n_2, a_1, a_2$ and $b$ in the parametric polar equation

(1)
\begin{align} r = \cos(a_1 t)^{n_1} + \sin(a_2 t)^{n_2} + b \end{align}

and observe the effects on the plotted curve.

Sage Cell

Code

@interact
def para(n1 = slider(1,5,1,default = 2), n2 = slider(1,5,1,default = 3), a1 = slider(1,10,1/10,6/5), a2 = slider(1,10,1/10,6), b = slider(0,2,1/50,0)):
    var('t')
    pretty_print(html('$r=' + latex(b+sin(a1*t)^n1 + cos(a2*t)^n2)+'$'))
    p = parametric_plot((cos(t)*(b+sin(a1*t)^n1 + cos(a2*t)^n2), sin(t)*(b+sin(a1*t)^n1 + cos(a2*t)^n2)), (t,0, 20*pi), plot_points = 1024, rgbcolor = (0,0,0))
    show(p, figsize = [5,5], xmin = -2-b, xmax = 2+b, ymin = -2-b, ymax = 2+b, axes = False)

Options

none

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Date: 22 Jul 2020 23:01

Submitted by: Zane Corbiere

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