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bigKID
Joined: 18 Jul 2004Posts: 6
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Posted: Wed Jan 05, 2005 4:06 pm Post subject: indices
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simplify and express the ans with +ve indices [4(3)^k-27(3)^(k-1)]/[3^(k-1)-3^(k+1)]*[1/9^(-k)]
thx
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Wilson
Frequent VisitorJoined: 20 Oct 2004Posts: 74
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Posted: Thu Jan 06, 2005 3:03 pm Post subject: Re: indices
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bigKID
Joined: 18 Jul 2004Posts: 6
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Posted: Thu Jan 06, 2005 6:22 pm Post subject: ..
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ur ans is wrong..
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Wilson
Frequent VisitorJoined: 20 Oct 2004Posts: 74
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Posted: Thu Jan 06, 2005 7:03 pm Post subject: Re: ..
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bigKID wrote:
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| ur ans is wrong.. |
How about this?
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bigKID
Joined: 18 Jul 2004Posts: 6
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Posted: Fri Jan 07, 2005 1:41 pm Post subject: .
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many ppl got the same ans as urs.. the ans is -9/8
i dunno how to get it
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Andy
Frequent VisitorJoined: 28 Oct 2003Posts: 391
Location: Hong Kong
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Posted: Fri Jan 07, 2005 3:09 pm Post subject: Re: .
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bigKID wrote:
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| many ppl got the same ans as urs.. the ans is -9/8
i dunno how to get it
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The powers of 3 do not agree if the answer is independent of k. I think you have typed the question wrongly. By the way, please do not cross post the same question in more than 1 section._________________
Patience and tolerance are necessarily demanded Year-round.
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