Focus of a Parabola
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12-27-2018, 04:57 PM
Post: #1
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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!
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12-27-2018, 06:13 PM
Post: #2
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RE: Focus of a Parabola
(12-27-2018 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/thread-10605.html Conics(y-(2*x^2-x-1)) |
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12-27-2018, 06:34 PM
Post: #3
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RE: Focus of a Parabola
Thank You Toshk.
I was looking for a built-in HP Prime function like something under Catlg or CAS, et cetera. Is there anything like finding the focus with a built-in HP Prime function? Cheers! |
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12-27-2018, 06:37 PM
Post: #4
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RE: Focus of a Parabola | |||
12-28-2018, 02:37 PM
Post: #5
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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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