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Joined:	21 May 2007
Post:	98

6 Jan 2009 20:55:13 IST

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328

the eccen..............

Engineering Entrance , JEE Main , CBSE Board , JEE Advanced , Mathematics , Analytical Geometry , CBSE XII (Science) , Mathematics I , Mathematics II

the eccentricity of d ellipse whose latus rectum is 4 and d distance of d vertex from d nearest focus is1.5 cm

plz give me a detailed ans

rates assured

Comments (1)

Sagar Saxena

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Joined: 8 Oct 2008

Posts: 8064

7 Jan 2009 00:32:17 IST

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hello dear..

2 b² / a = 4

ae = 3/2

now solve it :

divide the two equations

put e² = 1 - (b/a)²

e = 3/ 7.....

nudge me if i did some mistake in solving

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