Simplifying equation of a parabola  TOPIC_SOLVED

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Simplifying equation of a parabola

Postby maroonblazer on Wed Jun 04, 2014 3:06 pm

Hi,
The text defines the equation of a parabola as:


It goes on to say:
By squaring and simplifying we get .

I'm trying to recreate the steps they took to get from the first form to the second. I start by removing the radical sign by multiplying both sides by

but that doesn't seem to lead anywhere useful.

Hints?
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Re: Simplifying equation of a parabola  TOPIC_SOLVED

Postby theshadow on Thu Jun 05, 2014 7:22 pm

maroonblazer wrote:The text defines the equation of a parabola as:


It goes on to say:
By squaring and simplifying we get .

I'm trying to recreate the steps they took to get from the first form to the second. I start by removing the radical sign by multiplying both sides by

Try squaring both sides:




See where that goes.
theshadow
 
Posts: 87
Joined: Sun Feb 22, 2009 11:12 pm


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