Ex 11.2, 5 - y2 = 10x, find focus, axis, directrix, latus

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Ex 11.2,  5 - Chapter 11 Class 11 Conic Sections - Part 2

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Ex 11.2,  5 - Chapter 11 Class 11 Conic Sections - Part 3

  1. Chapter 11 Class 11 Conic Sections (Term 2)
  2. Serial order wise

Transcript

Ex 11.2, 5 Find the coordinates of the focus, axis of the parabola, the equation of directrix and the length of the latus rectum for y2 = 10x Given equation is y2 = 10x. Since the above equation is involves y2 Its axis is x-axis Also coefficient of x is positive (+) Hence we use equation y2 = 4ax Comparing y2 = 10x & y2 = 4ax From (1) & (2) 4ax = 10x a = 10๐‘ฅ/4๐‘ฅ a = 5/2 Coordinate of focus is (a, 0) i.e. focus (๐Ÿ“/๐Ÿ,๐ŸŽ) Equation of Directix is x = โˆ’a x = (โˆ’๐Ÿ“)/๐Ÿ Latus Rectum is 4a = 4 ร— 5/2 = 10

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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.