Simplify With Assumptions

*To*: mathgroup at smc.vnet.net*Subject*: [mg17931] Simplify With Assumptions*From*: "David Park" <djmp at earthlink.net>*Date*: Sat, 5 Jun 1999 02:56:02 -0400*Sender*: owner-wri-mathgroup at wolfram.com

Simplify with assumptions in Version 4 is not everything one might hope. Simplify[Sqrt[x^2], x > 0] x But Simplify[Sqrt[(1 + 2*t^2)^2/t^2], t > 0] Sqrt[4 + 1/t^2 + 4*t^2] not (1 + 2*t^2)/t Of course we can see for ourselves and PowerExpand. Yet one would have hoped that Mathematica would have handled this case automatically. David Park djmp at earthlink.net http://home.earthlink.net/~djmp/