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	A fountain as a parabola		2007-03-08
		Emily pose la question : I have to do a math project proving that something in real life is a parabola. I really need some help here because i don't know where to start. I want to do it on a fountain and prove it's a parabola but how do i do that? I would really appreciate it if you could help Emily Stephen La Rocque lui répond.
	A fountain of water jets forms parabolic arches		2006-05-03
		Jennifer pose la question : Let's say in you have a fountain and the water jets form parabolic arches. The center of the fountain, being the origin of the coordinate system, it is elevated 5 feet off the ground, . The equation formed the water arch is y= -x2+4x, what is the radius of the basin needed to catch the water at ground level? Stephen La Rocque lui répond.

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