Re: Non-algebraic solution

*To*: mathgroup at smc.vnet.net*Subject*: [mg52427] Re: Non-algebraic solution*From*: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>*Date*: Sat, 27 Nov 2004 01:40:20 -0500 (EST)*Organization*: Uni Leipzig*References*: <co6h5d$nmp$1@smc.vnet.net>*Sender*: owner-wri-mathgroup at wolfram.com

Hi, Needs["Graphics`ImplicitPlot`"] With[{a = 1, b = 0.10, c = 1, d = 1}, ImplicitPlot[ Log[y/a] + b*Log[c + y/d] == -x, {x, -10, 100}, {y, 1/10, 100}] ] Regards Jens "B.Ravinder" <ravi at crest.ernet.in> schrieb im Newsbeitrag news:co6h5d$nmp$1 at smc.vnet.net... > Dear all, > I want to plot the following type of logarithmic equation having > dependent variable y and independent variable x. > > Log[y/a] + b*Log[c+y/d] = -x > > where a,b,c and d are some arbitrary constants. > > First I tried to solve the equation for y using Solve function in > Mathematica 4.2, but got the following error > message: > Solve:: tdep : > The equations appear to involve the variables to be solved > for in an essentially non-algebraic way. > > > Could someone please guide me as to how do we solve such equation > with/without Mathematica. > or > If possible, how to obtain y vs. x plot in Mathematica without soving them > exactly. > Waiting for the kind resonse. > > Regards, > Ravi >