Marry a Nerd

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When it came to love and dating, my dad had one piece of advice for his daughters.
He used to always say:

"When you grow up girls, marry a nerd."
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When we asked why, he would say:
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"Because. Nerds make the best husbands."
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Last week, Jack came home with an anniversary card from the campus bookstore.
Inside, in his neat handwriting, was this bit of hot romance:

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.Set: r(t) = 6*cos(6*t)
and
#Points = 250
Click Plot

Then Set: r(t) = 6*(1-sin(t))
and
# Points = 250

Click Plot

with instructions to visit the Polar Equations Applet at:

http://www.math.ucla.edu/~ronmiech/crew/eugene/java/PolarPlotter/PolarPlotter.html
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Confused, I typed in the address,
set my function (?),
entered my points (??),
and activated the polar plotter (???).

The result was this:
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and this:

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He was so proud.

Then suddenly panicked, because I actually started to cry. He thought I was crying because it was nerdy.

I was.