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bergen parabola
Stack #13959
Question | Answer |
---|---|
equation for parabola [^v] | y=a(x-h)^2+k |
equation for parabola [<>] | x=a(y-k)^2=h |
a.o.s.[^v] | x=h |
aos [<>] | y=k |
focus[^v] | (h,k+1/4a) |
focus[<>] | (h+1/4a,k) |
directrix[^v] | y=k-1/4a |
directrix[<>] | x=h-1/4a |
dir, of opening[^v] | ^ if a>0, v if a<0 |
dir. of opening [<>] | > if a>0, <if a<0 |
length latus rectum[^v] | I1/aI units |
length latus rectum [<>] | I1/a! units |