Focus of a Parabola

12272018, 04:57 PM
Post: #1




Focus of a Parabola
Is there any way to find the focus of a parabola (e.g. 2x^2 x 1) using the HP Prime. I cannot find a way to do it. If you have found a way please tell me the steps. Cheers!


12272018, 06:13 PM
Post: #2




RE: Focus of a Parabola
(12272018 04:57 PM)MullenJohn Wrote: Is there any way to find the focus of a parabola (e.g. 2x^2 x 1) using the HP Prime. I cannot find a way to do it. If you have found a way please tell me the steps. Cheers! http://www.hpmuseum.org/forum/thread10605.html Conics(y(2*x^2x1)) 

12272018, 06:34 PM
Post: #3




RE: Focus of a Parabola
Thank You Toshk.
I was looking for a builtin HP Prime function like something under Catlg or CAS, et cetera. Is there anything like finding the focus with a builtin HP Prime function? Cheers! 

12272018, 06:37 PM
Post: #4




RE: Focus of a Parabola  
12282018, 02:37 PM
Post: #5




RE: Focus of a Parabola
Thank you Toshk. I was unaware of the function reduced_conic().
I was unable to determine from the results of reduced_conic(y(2x^2+3x+1)) which item would tell me the focus (3/4, 3/8) or the focal length (p = 1/8). Which part of the result states the focus coordinates or the focal length p = 1/4a? Cheers! 

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