On Aug 22, 2011, at 8:36 PM, Claudio Zanettini wrote:
Hello everyone,
I would like to generate a sequence
such as, starting from 5, every value is
40% of the value before+ all the preceeding values.
es:
this is the seq of all the value+40% of the preceding value:
5 7 10 14 19 27 38
53 74 103 145 202 283 397
556 778 1089 1525 2134 2988 4183
then the vector tha I need is
5 , 5+7, 5+7+10, 5+7+10+14 and so on
If you have the first vector, then the second vector is just:
cumsum(vec)
(I am not sure this actually implements the problem statement. I would
have imagined the third item to be 12+0.4*7 from the written
description and for it to increase more rapidly.)
I can generate the first sequence but I don t know how to generate
the last.
You should offer code when you have a partial solution.
--
David Winsemius, MD
West Hartford, CT
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