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Duncan uploaded a new app: Rolling Parabola 11 years, 6 months ago
If you roll a parabola along the ground, what curve does its focus trace out?It might look like a parabola, but is it?
Duncan uploaded a new app: Rolling Parabola 11 years, 6 months ago
If you roll a parabola along the ground, what curve does its focus trace out?
It might look like a parabola, but is it?