Re: Help: Column/Row Vector

*To*: mathgroup at smc.vnet.net*Subject*: [mg4322] Re: [mg4253] Help: Column/Row Vector*From*: "Richard L. Bowman" <rbowman at bridgewater.edu>*Date*: Tue, 9 Jul 1996 00:50:41 -0400*Sender*: owner-wri-mathgroup at wolfram.com

On Sun, 23 Jun 1996 khinast at nld.chee.uh.edu wrote: > I have two vectors x=(x1,x2) and y = (y1,y1). How can I persuade Mathematica > that e.g. x is a column vector and y is a row vector, which is kind of > important for their multiplication . Mma in a sense treats the first level of parentheses as rows. Therefore y is already a row vector. To make x a column vector, write it as x = {{x1},{x2}} Then y x = {{y1,x1},{y2,x2}} as expected. ------------------------------------------------------------------------- Dr. Richard L. Bowman Dept. of Physics e-mail: rbowman at bridgewater.edu Bridgewater College phone: 540-828-5441 Bridgewater, VA 22812 FAX: 540-828-5479 "http://www.bridgewater.edu/departments/physics/physics.html"; ------------------------------------------------------------------------- ==== [MESSAGE SEPARATOR] ====