Re: Dot or Inner ... but not quite
- To: mathgroup at smc.vnet.net
- Subject: [mg79632] Re: Dot or Inner ... but not quite
- From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
- Date: Wed, 1 Aug 2007 04:49:44 -0400 (EDT)
- Organization: Uni Leipzig
- References: <f8n2rc$lp9$1@smc.vnet.net>
- Reply-to: kuska at informatik.uni-leipzig.de
Hi,
and
l1*l2
??
Regards
Jens
Diamond, Mark wrote:
> I have two equi-length lists, the first of number, the second of
> (equi-length) lists of numbers , such as
>
> l1={1,4,3};
> l2={{1,7},{1,9},{5,2}};
>
> I want to produce 1*{1,7}+4*{1,9}+3*{5,2}
>
> It looks so close to Inner that I thought I could use it in some form, but I
> have ended up using
>
> (#[[1]]*#[[2]])& /@ Transpose[{l1,l2}]
>
> Is there a better way using one of the builtin functions with which I am
> unfamiliar?
>
> Cheers,
>
> Mark Diamond
>
>
>