#
What is directrix of ellipse and its formula for solving problem

(ch - conic section of class 11)

1
by ssg9189

Log in to add a comment

(ch - conic section of class 11)

by ssg9189

Log in to add a comment

Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.

Directrix is a line perpendicular to the major axis of the ellipse, which is at a distance a/e from the center of ellipse on either side, where e is the eccentricity of the ellipse.

Eccentricity of ellipse is the ratio of distance of a focus from the center of ellipse to the semi major axis.

Directrix is the line from which the distance of a point P on ellipse and the distance of that point P from a focus F are in a fixed ratio, namely the (1/eccentricity).

b² = a²(1-e²) x²/a² + y²/b² = 1

px+qy+r =0 P = (x1, y1)

(x1-ae)² + y1² = ( p x1 + q y1 + r )² / (p² + q²)

Eccentricity of ellipse is the ratio of distance of a focus from the center of ellipse to the semi major axis.

Directrix is the line from which the distance of a point P on ellipse and the distance of that point P from a focus F are in a fixed ratio, namely the (1/eccentricity).

b² = a²(1-e²) x²/a² + y²/b² = 1

px+qy+r =0 P = (x1, y1)

(x1-ae)² + y1² = ( p x1 + q y1 + r )² / (p² + q²)