[R] Vector of symbols?

[Judson]

Is
there a way to multiply a matrix 

times
a vector of symbols?  

For
instance, could I do this: 

1       
0       0                          a

0        1      
0      times           b

-1       2      
1                          c                

 

which
should result in :  

                                                      a

                                                      b

                                                      c  –a 
-2*b 
where a, b, and c 

are
as yet not assigned numeric values?  

........................... judson blake


 		 	   		  
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