desperate, please help.

*To*: mathgroup at smc.vnet.net*Subject*: [mg27355] desperate, please help.*From*: thjqase at aol.com (Thjqase)*Date*: Wed, 21 Feb 2001 03:18:06 -0500 (EST)*Sender*: owner-wri-mathgroup at wolfram.com

I need help numerically solving a differential equation coupled with several algebraic equations. New to Mathematica. Here's code: NDSolve[{v'[x] == -F÷r, T[x] == 330 + 43.3*x, F = .9*163, C == 9.3, k[x] == 31.1Exp(7906*(T - 360)/(T*360)) , K[x] == 3.03*Exp(-830.3*((T - 333)/(T*333))), r[x] == -k*C*(1 - (1 + 1/K)*x), v[0] == 0}, {v} , {x, 0, .7}] Error code is: NDSolve::"deql": "The first argument must have both an equation and an \ initial condition." Any suggestions? What am I doing wrong? My head is sore from banging it against the wall. TIA.