FindRoot with Logarithmic terms

*To*: mathgroup at smc.vnet.net*Subject*: [mg115995] FindRoot with Logarithmic terms*From*: skunkwerk <skunkwerk at gmail.com>*Date*: Fri, 28 Jan 2011 06:16:29 -0500 (EST)*Reply-to*: comp.soft-sys.math.mathematica at googlegroups.com

Hi, I'm trying to find the roots of a logarithmic equation that I've plotted successfully (I can see both roots are between 0 and 1). expr = 7500*x*(1 - x) + 325*8.314*(x*Log[x] + (1 - x)*Log[(1 - x)]) FindRoot[expr == 0, {x, 0, 1}] FindRoot:nlnum: the function value(indeterminate) is not a list of numbers with dimensions {1} at {x} = {0.} any ideas? thanks