who knows what is the equation of directrix of an ellipse? both vertical and horizontal. for (x-h)^2/b^2+(y-k^2/a^2)=1 ???

Question

anonymous · Answer

fr vertical and hrizntal ellpse pleaaaaaaaaaaaase

ganeshie8 · Answer

since an ellipse has two focus points,
it will  have two directrices also

anonymous · Answer

do you knw what is the equation?

ganeshie8 · Answer

attachment

ganeshie8 · Answer

use that chart

anonymous · Answer

thank you s much!!!!!!!!!!!!

ganeshie8 · Answer

np :) 
that chart has everything you ever need.. when dealing wid ellipses

anonymous · Answer

thank you very much and have a nice day!

ganeshie8 · Answer

for vertical ellipses :-

two directrix equations :

$\large  y = k+ \frac{a^2}{c}$

$\large  y = k- \frac{a^2}{c}$

ganeshie8 · Answer

ty :) you too have a great day !!