Question 1159537
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ ax^2\ +\ bx\ +\ c]


Focus:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \(\frac{-b}{2a},\ \frac{1\,-\,b^2}{4a}\ +\ c\)]


Directrix:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y\ =\ c\ -\ \frac{1\,+\,b^2}{4a}]
								
								
John
*[tex \LARGE e^{i\pi}\ +\ 1\ =\ 0]
My calculator said it, I believe it, that settles it
<img src="http://c0rk.blogs.com/gr0undzer0/darwin-fish.jpg">
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \  
								
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