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Re:[mg4253] Help: Column/Row Vector
Posted:
Jun 28, 1996 9:48 AM


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@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) 4536501 Department of Mathematics Fax: (618) 4535300 Southern Illinois University Email: edneuman@math.siu.edu Carbondale, Ill. 629014408 WWW: http://www.science.siu.edu/mathematics/neuman/



