If a <> -b, is (a - b)/(a + b) < 1? 1) b^2 > a^2 : DS Archive
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# If a <> -b, is (a - b)/(a + b) < 1? 1) b^2 > a^2

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Joined: 08 Jun 2006
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If a <> -b, is (a - b)/(a + b) < 1? 1) b^2 > a^2 [#permalink]

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19 Nov 2006, 19:42
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If a <> -b, is (a - b)/(a + b) < 1?

1) b^2 > a^2
2) a - b > 1
VP
Joined: 25 Jun 2006
Posts: 1172
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Kudos [?]: 145 [0], given: 0

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19 Nov 2006, 20:59
A.

from 1), u get (a-b)(a+b) < 0,
then (a-b)/(a+b)<0<1. Suff.

2) is INsuff.
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