X6522Y92 Find the endpoints of the lactus rectumSolution x 6
(X+6/5)^2=2(Y+9/2)
Find the endpoints of the lactus rectum
Solution
( x+ 6/5)^2 = 2 ( y+9/2)
vertex of parabola is
-6/5 , -9/2
standard equation of parabola is
(x-h)^2 = 4p(y-k)
4p = 2
p = 2/4 = 1/2
focus = ( h , k+p) = ( -6/5 , - 4 )
length of latus rectum = 4p = 2
hence , endpoints of latus rectum are
(-11/5 , - 4 ) and ( -1/5 , - 4 )
