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Math Forum » Discussions » Software » comp.soft-sys.matlab

Topic: nonlinear equation
Replies: 2   Last Post: Nov 16, 2005 11:03 AM

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Marcelo Marazzi

Posts: 24
Registered: 8/29/05
Re: nonlinear equation
Posted: Nov 16, 2005 11:03 AM
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I'm assuming you're looking for a numerical solution
for t given numeric values for y and m. (E.g., if
y = 1 and m = 2, find a t that satisfies the equation.)

Fzero solves scalar equations in one unknown. Type
"doc fzero" at the MATLAB prompt to see an example.

If you get errors, please post the specific errors you're
getting, and the code that calls fzero.

-marcelo

giannis margaris wrote:
> Hello everybody!
> I have written wrong the equation in the previous thread!!!!
> This the correct!!!
> If u had a nonlinear equation like this
> y=0.22.*(116.*(1./(m+0.08.*t)-0.035./(t.^3+1))-
> 0.4.*t-5).*exp((-12.5).*(1./(m+0.08.*t)-0.035./(t.^3+1))) and
> u wanted to solve it for t (like t=f(y,m))
> what would u do???
> I have tried solve, fsolve, fzero but sth is always wrong
> !!!
> Thank you for your time!!!!




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