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Re: Equal and operation with list

  • To: mathgroup at smc.vnet.net
  • Subject: [mg29514] Re: [mg29491] Equal and operation with list
  • From: BobHanlon at aol.com
  • Date: Sat, 23 Jun 2001 01:46:55 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

In a message dated 2001/6/22 2:28:45 AM, guillerm at gugu.usal.es writes:

>I  have tree list:
>
>Y = {y1, y2}
>B = {{b11,b12} , {b21, b22}}
>X = {X1, X2}
>
>I wish transform its in a system of equations like this:
>
>{y1== b11 X1 + b12 X2, y2== b21 X1 + b22 X2}
>
>I have test with Y == Dot[B,X] but don`t work. Any help?. Thanks
>

Y = {y1, y2};
B = {{b11, b12}, {b21, b22}};
X = {X1, X2};

Thread[Y == B.X]

{y1 == b11*X1 + b12*X2, 
  y2 == b21*X1 + b22*X2}


Bob Hanlon
Chantilly, VA  USA


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