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Re: ListCorrelate and Powers

  • To: mathgroup at smc.vnet.net
  • Subject: [mg116276] Re: ListCorrelate and Powers
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Wed, 9 Feb 2011 02:11:32 -0500 (EST)

ListCorrelate[{1, 2, 3, 4}, {a, b, c, d, e},
  1, 1, Power[#2, #1] &, Plus][[{1, 2}]]

{a + b^2 + c^3 + d^4, b + c^2 + d^3 + e^4}


Bob Hanlon

---- "Harvey P. Dale" <hpd1 at nyu.edu> wrote: 

=============
It is easy to use ListCorrelate to generate the sum of a list
with each element multiplied by the successive terms in the "kernel."
For example, ListCorrelate[{1,2,3,4},{a,b,c,d,e}] produces {a+2 b+3 c+4
d,b+2 c+3 d+4 e}.  Is there any way, using the optional 5th and 6th
parameters, to generate this list instead:
{a+b^2+c^3+d^4,b+c^2+d^3+e^4}?
Thanks.
Harvey

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--

Bob Hanlon



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