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![[Post New]](/templates/default/images/icon_minipost_new.gif) 8 May 2008 20:37:10 IST
Accepted Answer [?]
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since normal again meets at Q
so, Q = -P - 2/P -------------------(1)
now, slopes of two lines joinning origin to P , Q are
2/P and 2/Q resp.
since these r perpendicular so , 2/P.2/Q = -1 ----(2)
from (1) and (2) P^2 = 2 ..
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my future signature:
LOKESH SARDANA,
department of Production and Industrial engineering,
Indian Institute of Technology,Roorkee.
Happiness can be found, even in the darkest of times, if one only remembers to turn on the light.
Albus Dumbledore
Harry Potter and the Prisoner of Azkaban movie
There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.
-- Albert Einstein
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this reply: 5 points
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