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## Re: Nonlinear equation

 From: Paul Kienzle Subject: Re: Nonlinear equation Date: Tue, 15 Apr 2003 23:54:45 -0400 User-agent: Mozilla/5.0 (Windows; U; Win 9x 4.90; en-US; rv:1.3a) Gecko/20021212

```address@hidden wrote:

```
```Hello,

Can you help me how to solve a nonlinear equation given by:

x = a*y*ln(b) - a*y*ln(y) + a*y

where a and b are constant parameters.
I know the inital value of x0 and I want to know the value of y.

Can I use Newton's method? How?
```
```global  a=7;
global  b=6;
global  x0=5;
function r=g(y), global a b x0; r = a*y*log(b) - a*y*log(y) + a*y - x0; end
fsolve('g',9);

ans = 15.579;

Paul Kienzle
address@hidden

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