Parabola | Definitions of elements of parabola | Focus | Directrix |Vertex | Derivation of Equation скачать в хорошем качестве

Parabola | Definitions of elements of parabola | Focus | Directrix |Vertex | Derivation of Equation

00:00 Introduction 00:29 Definition of Parabola 07:40 Standard Equation of Parabola 08:25 Axis of Parabola 11:05 Equation of axis of Parabola 11:48 Chord of Parabola 13:30 Focal chord of Parabola 13:39 Latusrectum of Parabola 14:30 Length of latusrectum of Parabola 14:58 Derivation of Standard Equation of Parabola 22:30 Plx like, subscribe, comments and share Thanks! *Parabola: The set of all points which are equi-distance from a fixed point and a fixed line is called parabola. from figure |PF|= |PM| or |PF| / |PM| = 1 = eccentricity i.e e= 1 Fixed point is called focus of parabola and Fixed line is called directrix ( DTX ) of parabola *Standard Equations of Parabola y^2= 4ax y^2= -4ax x^2= 4ay *x^2= -4ay *Axis of parabola: A line passing through focus and perpendicular to directrix is called axis of parabola *Vertex of parabola: The point where axis meet the parabola is called vertex of parabola *Equations of axis of parabola: y = 0 *Chord of parabola: A line whose end points lie on parabola is called chord of parabola *Focal chorde of parabola: A chord passing through focus is called focal chord of parabola *Latusrectum of parabola: A focal chord perpendicular to the axis of parabola is called latusrectum of parabola Length of latest rectum of parabola: Lngth of of latusrectum of parabola is 4a For more videos visit to play list: Ecat Lecture # 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