Re: Limit Question

*To*: mathgroup at smc.vnet.net*Subject*: [mg66463] Re: Limit Question*From*: "david_tang" <david3687 at gmail.com>*Date*: Sun, 14 May 2006 02:57:51 -0400 (EDT)*References*: <e43vun$90e$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

hei it can work while using this: Assuming[a > 0, Limit[Exp[-a t], t -> Infinity]] I think: Simplify[expr, assum] does simplification using assumptions, but not evaluates expr with assum. Then the limit will be evaluated, so it gives no output.