Re: Multiply a constant to a matrix column
- To: mathgroup at smc.vnet.net
- Subject: [mg16316] Re: Multiply a constant to a matrix column
- From: "Martin Rommel" <rommel at semitest.com>
- Date: Sun, 7 Mar 1999 01:05:42 -0500
- Organization: UltraNet Communications , an RCN Company http://www.ultranet.com/
- References: <7bo0gg$dop@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
This works (multiplying the second column by x), but there are many more and
probably more elegant solutions:
lst={{a,b,c},{d,e,f},{g,h,i}};
lst=Thread[Thread[lst]{1,x,1}];
lst//TableForm
Martin
P.S. Thread in this case works the same as Transpose, only faster.
Hyo ahn wrote in message <7bo0gg$dop at smc.vnet.net>...
>I would like to multiply a constant number to a certain column of an
existing
>matrix in Mathematica and I am having a hard time.