# Ex 11.3, 11 - Chapter 11 Class 11 Conic Sections

Last updated at May 29, 2018 by Teachoo

Last updated at May 29, 2018 by Teachoo

Transcript

Ex 11.3, 11 Find the equation for the ellipse that satisfies the given conditions: Vertices (0, 13), foci (0, 5) Given Vertices (0, 13) Hence The vertices are of the form (0, a) Hence the major axis is along y-axis & equation of ellipse is of the form 2 2 + 2 2 = 1 From (1) & (2) a = 13 Also given coordinate of foci = (0, 5) We know that foci are = (0, c) So c = 5 We know that c2 = a2 b2 (5) 2 = (13) 2 b2 b2 = (13) 2 (5) 2 b2 = 169 25 b2 = 144 Equation of ellipse is 2 2 + 2 2 = 1 Putting value 2 144 + 2 169 = 1

Chapter 11 Class 11 Conic Sections

Serial order wise

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Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.