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This is a soft question.

It's not difficult , say, to draw a point moving on the $y=x²$ parabola with Desmos.

One can first declare that $b= a² $ , then define point $P$ as $P=(a,b) $ , and finally let vary $a$.

But this " method" does not work with the equation of a circle , first setting, say, $a²+b²=1$.

Any solution? Or hint?

Thanks in advance.

$\endgroup$ 2 Sorted by: Reset to default

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