Re: HELP! algebraic math problem

*To*: mathgroup at smc.vnet.net*Subject*: [mg2949] Re: HELP! algebraic math problem*From*: wilson figueroa <wfigueroa at mosquito.com>*Date*: Sun, 14 Jan 1996 03:43:02 -0500*Organization*: Mosquito Net, Inc.

David, Since you have an equation which involves a transcendental function, it is almost always impossible to find a closed form solution involving x only. At this point one needs to resort to numerical techniques. Here you can use FindRoot[f(x) == 0, {x,x0}]. For example, FindRoot[10*Log[x] + 2*x - 3 == 0,{x,4}, WorkingPrecision -> 30] would yield, x = 1.0862...(to thirty places) Note that I would recommend plotting the function over a range of x. Obviously here, x must be > 0, and plotting will help you to see the zeros of the function. Have fun Wilson. ==== [MESSAGE SEPARATOR] ====