Symbolic Manipulation of Matrices [Newbie Question]
- To: mathgroup at smc.vnet.net
- Subject: [mg113210] Symbolic Manipulation of Matrices [Newbie Question]
- From: stefan <stefan.duke at gmail.com>
- Date: Tue, 19 Oct 2010 05:54:04 -0400 (EDT)
Hello,
I am a complete newbie in Mathematica and wante to solve the following:
I have the matrix Y and the vector P0.
The vector P1 = Y.PO
Now I transform P1 to Star.
This expresses Star in term of Y.PO.
I would like to know now how can I simplify this expression so it yields
Star = Ytransformed * P0.
I can do that by hand, but I wonder how do such things in Mathematica
Thanks for any pointers!
Best,
Stefan
Y = {{Subscript[y, 11], Subscript[y, 12]}, {Subscript[y, 21],
Subscript[y, 22]}}
P0 = {Subscript[p0, 1], Subscript[p0, 2]}
P1 = Y.P0
Star = {P1[[1]] + (1 - a)*P1[[2]], a*P1[[2]]}