Question

how do you find the polar equation of the parabola with the given vertex (2, pi/2) and focus at the pole? I AM SO LOST HELP!!!

Answer 1

but i want to find a polar equaiton

Answer 2

someone help me.....

Answer 3

focus at the pole?

Answer 4

oh,

Answer 5

circle \[x^2+y^2=r^2\]\[y^2=r^2-x^2\]

parabola \[y=-x^2+a\]\[y+x^2=a\]

Answer 6

yes focus at the pole
and they said that the directrix is 4 which doesnt make any sense...how did they get the directrix 4? and the ecctricity 1..?