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# ds og 1O TH 245

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Joined: 05 Oct 2005
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ds og 1O TH 245 [#permalink]

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05 Dec 2005, 10:10
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Is 1/a-b<b-a?

St1 a<b

St2 1< ABSOLUTE VALUE OF a-b

plz explain your works

thanks
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Re: ds og 1O TH 245 [#permalink]

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05 Dec 2005, 19:16
Is 1/(a-b)<(b-a)?

(1) a<b ==> a-b<0 or b-a>0 ==> 1/-ve < +ve. Sufficient.
(2) 1<|a-b| ==> a-b<0 or a-b>0. Insufficient.

Re: ds og 1O TH 245   [#permalink] 05 Dec 2005, 19:16
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# ds og 1O TH 245

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