Thursday, 14 May 2020

Formula of Conic Section



1. Formula of circle
(x-h)² + (y-k)² = r²
Where C(h,k) is centre
P(x,y) is point on circle
And CP = r is radius of circle




2. Formula of parabola
       
 Directrix is called the fixed line.
Focus is the fixed point F.
Axis of parabola is a line through the focus and perpendicular to the directrix.

 

y² = 4ax








 * y² = -4ax


* x² = 4ay












* x² = -4ay







Latus rectum of a parabola is a line segment perpendicular to the axis of the parabola, through the focus and whose end points lie on the parabola.


Length of latus rectum = 4a

No comments:

Post a Comment