I was given this equation as the lines of electric fields of a dipole(two opposite charges separated by a finite distance)(adsbygoogle = window.adsbygoogle || []).push({});

e=(1/r^3)*((3cos^2(theta)-1)^2 +sin^2(2theta))^0.5

and I was asked to plot it.

I guess it must be something like this:

but when I try to plot it in wolframalpha.com in polar coords.I dont get the output I expect.

The question is is it the right equation?

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# Plotting electric field lines of a dipole

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