Re:Help: Column/Row Vector

*To*: mathgroup at smc.vnet.net*Subject*: [mg4323] Re:[mg4253] Help: Column/Row Vector*From*: "Edward G. Neuman" <edneuman at math.siu.edu>*Date*: Tue, 9 Jul 1996 00:50:52 -0400*Sender*: owner-wri-mathgroup at wolfram.com

Khinast wrote: >Hi, > >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 . >I've studied the help page for hours, with no result. So could >someone please help me. My email address is: > >khinast at nld.chee.uh.edu > > >Joh. Denote by xc and yr the column and row versions of x and y, respectively. You can execute the following lines: x={x1,x2}; y={y1,y2}; xc=Partition[x,1] {{x1}, {x2}} yr=List[y] {{y1, y2}} Dimensions[xc] {2, 1} Dimensions[yr] {1, 2} to obtain the desired result. =============================================================================== Edward Neuman Phone: (618) 453-6501 Department of Mathematics Fax: (618) 453-5300 Southern Illinois University E-mail: edneuman at math.siu.edu Carbondale, Ill. 62901-4408 WWW: http://www.science.siu.edu/mathematics/neuman/ ==== [MESSAGE SEPARATOR] ====