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Sequence problem, a1, a2,..an

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Junior | Next Rank: 30 Posts
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Sequence problem, a1, a2,..an

by neilcao » Mon Feb 07, 2011 8:39 am
The sequence a1, a2,....an,.../ is such that an=4an-1 - 3,for all integers n>1. If ac=x, then a1=?

A. 4x-3
B. 16x-15
C. X+3/4
D. X+3/16
E. X+15/16


Is there any quick way to solve this problem?

Thanks
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by towerSpider » Mon Feb 07, 2011 8:43 am
this is ds forum. post it in ps.
People are not prisoners of fate, but prisoners of their own mind.
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Junior | Next Rank: 30 Posts
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by neilcao » Mon Feb 07, 2011 7:42 pm
towerSpider wrote:this is ds forum. post it in ps.
Sorry already posted it again in PS: https://www.beatthegmat.com/sequence-pro ... tml#338264
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