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Re: mathematica

• To: mathgroup at smc.vnet.net
• Subject: [mg65799] Re: mathematica
• From: "Scout" <Scout at nodomain.com>
• Date: Mon, 17 Apr 2006 02:28:55 -0400 (EDT)
• References: <e1supm$chd$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

"liv elena" <llivvia2003 at yahoo.com>
 news:e1supm$chd$1 at smc.vnet.net...
>
> [This post has been delayed due to email problems - moderator]
>
>
>   hello,
>  please help me with this problem
>
>  ai have the next code :
>  a = {{1, 4}, {34, 5}}
>  b = {{12, 4}, {4, 35}}
>
>  and ai want to obtain a matrix like this:
>  rez={{1+12,4+4},{34+4,5+35}}
>
>  ..
>  if i use
>  c = {{StringForm["a[[1,1]]+b[[1,1]]"], StringForm["a[[1,2]]+b[[1,2]]"]},
>  {StringForm["a[[2,1]]+b[[2,1]]"],
>  StringForm["a[[2,2]]+b[[2,2]]"]}}
>  i obtain :
>  \!\(\*FormBox[
>    RowBox[{"(", "\[NoBreak]", GridBox[{
>          {"\<\"a[[1,1]]+b[[1,1]]\"\>", "\<\"a[[1,2]]+b[[1,2]]\"\>"},
>          {"\<\"a[[2,1]]+b[[2,1]]\"\>", "\<\"a[[2,2]]+b[[2,2]]\"\>"}
>          }], "\[NoBreak]", ")"}], TraditionalForm]\)
>
>  but ai want the numerical values ..
>  thank you verry much
>
>
>
Hi Elena,
in your example the answer is simply the sum of the two matrices:
    In[1]:= a+b
    Out[1]= {{13,8},{38,40}}


    ~Scout~