I cannot seem to make mathematica plot the following equation correctly:(adsbygoogle = window.adsbygoogle || []).push({});

r[t_] = 3 Cos[t] + iSin[t];

plotbeta = PolarPlot[r[t], {t, -Pi/2, Pi/2}]

I have used the capital I to no avail; I have used * to indicate multiplication. It plots the curve without a problem when I leave out the i, but I need the i! I will appreciate your help. Thank you.

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# Mathematica Help - Plotting equation with i

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