Re: how can I solve a transcendantale function?
- To: mathgroup at smc.vnet.net
- Subject: [mg48267] Re: how can I solve a transcendantale function?
- From: "David W. Cantrell" <DWCantrell at sigmaxi.org>
- Date: Thu, 20 May 2004 04:03:43 -0400 (EDT)
- References: <firstname.lastname@example.org>
- Sender: owner-wri-mathgroup at wolfram.com
montgermont.aude at ec-lille.fr (aude) wrote: > I can't solve this function: > > Log[1 - æ[t]] + (æ[t]/(1 - æ[t])) == 8*t > > I've tried with Sole, NSolve and Findroot without success. Sometimes Mathematica isn't as bright as we'd like, and so we need to help it a little. True, Mathematica won't solve Log[1 - x] + (x/(1 - x)) == 8*t for x. But let's replace 1-x by y. The equation can then be rewritten so that Mathematica can solve it for y: In:= Solve[1 + y*Log[y] == (8*t + 1)*y, y]