Help with findroot

*To*: mathgroup at smc.vnet.net*Subject*: [mg9169] Help with findroot*From*: darrmis at aol.com (Darrmis)*Date*: Thu, 16 Oct 1997 03:38:08 -0400*Sender*: owner-wri-mathgroup at wolfram.com

I'm having a problem using findroot to solve an equation. Perhaps someone could shed some light on what's wrong. FindRoot[Sqrt[x/(1.2 10^ -4)]==-0.1*Tan[Sqrt[x/(1.2*10^ -4)]],{x,0.1,0.1,2}] Mathematica 3. returns a value of -0.07 for x which is not anywhere close to correct. Further, I've tried several different starting values and min/max limits, but a negative answer is always returned. Eventually I'de like to compile a list of all the roots of the equation up to, say, x=1000, but I can't even get one right now. Thanks, Karl Kevala