display of function

*To*: mathgroup at smc.vnet.net*Subject*: [mg58506] display of function*From*: "Bosch, Darrell" <bosch at vt.edu>*Date*: Tue, 5 Jul 2005 01:57:45 -0400 (EDT)*Sender*: owner-wri-mathgroup at wolfram.com

Dear Math Group: The first equation below shows a function for u(y) which is the sum of the products of pi times yi. In the following steps, I assign values of p and y. How can I get Mathematica to display the numerical value of u for the given p and y values? When I insert the u[y] command, I just get a repeat of the equation I have entered. Thanks for your suggestions. This group is a great help. Darrell u[y_] := Sum[Subscript[p, i]*Subscript[y, i], {i, 1, n}] p = {.3,.4,.3} y={10000, 20000, 30000}

**Follow-Ups**:**Re: display of function***From:*"Carl K. Woll" <carl@woll2woll.com>