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#1 2008-08-01 21:03:53
- shooting_star
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- Registered: 2008-08-01
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Area Under A Curve
Hey all,
Could anyone please, please help me with this question that I am struggling with? I'm not to sure how to upload the graph but I will try to describe it as best I can.
There is a parabola marked ABC, where A and C are the x-intercepts and B is the vertex. B is (0,50) whilst AC equates to 100m. I don't understand how to find the equation of the arc.
Answer is supposed to be x^2 = -50(y-50).
Thank you very much. Any help would be extremely appreciated. 
Last edited by shooting_star (2008-08-01 21:08:43)
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#2 2008-08-01 21:14:42
- shooting_star
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- Registered: 2008-08-01
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Re: Area Under A Curve
bump~
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#3 2008-08-01 21:17:50
- Identity
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- Registered: 2007-04-18
- Posts: 934
Re: Area Under A Curve
Hint: The vertex of a parabola is mid-way between the x-intercepts.
Once you have the x intercepts, you will have the form
with roots and some constant a. As y = 50 when x = 0 you can solve for a.Offline
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