# Ex 11.3, 4 - 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, 4 Find the coordinates of the foci, the vertices, the length of major axis, the minor axis, the eccentricity and the length of the latus rectum of the ellipse x2 25 + y2 100 = 1 2 25 + 2 100 = 1 Since 25 < 100 Hence the above equation is of the form 2 2 + 2 2 = 1 Comparing (1) & (2) We know that c = a2 b2 c = 100 25 c = 75 c = 5 Co-ordinate of foci = (0, c) = (0, 5 3 ) So co-ordinates of foci (0, 5 3 ), & (0, 5 3 ) Vertices = (0, a) = (0, 10) So vertices are (0, 10) & (0, 10) Length of major axis = 2a = 2 10 = 20 Length of minor axis = 2b = 2 5 = 10 Eccentricity e = c a = 5 3 10 = 3 2 Length of latus rectum = 2b2 a = 2 25 10 = 5

Ex 11.3

Ex 11.3, 1

Ex 11.3, 2

Ex 11.3, 3

Ex 11.3, 4 You are here

Ex 11.3, 5 Important

Ex 11.3, 6

Ex 11.3, 7

Ex 11.3, 8

Ex 11.3, 9

Ex 11.3, 10

Ex 11.3, 11 Important

Ex 11.3, 12 Important

Ex 11.3, 13

Ex 11.3, 14 Important

Ex 11.3, 15

Ex 11.3, 16 Important

Ex 11.3, 17

Ex 11.3, 18 Important

Ex 11.3, 19 Important

Ex 11.3, 20

Chapter 11 Class 11 Conic Sections

Serial order wise

About the Author

Davneet Singh

Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.