Re: [Scilab-users] 'fsolver'

The feature of my f(x) defined for x>0 is as follows. f(x)<0 for x0 for x1=x2 'fsolver' gives some x such as x>x2 as a solution. I want to get x1 as a solution. -- View this message in context: http://mailinglists.scilab.org/fsolver-tp4033340p4033345.html Sent from the

Re: [Scilab-users] 'fsolver'

Le 27/01/2016 16:54, fujimoto2005 a écrit : The feature of my f(x) defined for x>0 is as follows. f(x)<0 for x0 for x1=x2 'fsolver' gives some x such as x>x2 as a solution. I want to get x1 as a solution. -- View this message in context:

Re: [Scilab-users] 'fsolver'

May be you can use optim instead of fsolve using f(x)^2+alpha*norm(x)^2 as cost function with alpha small enough If you cannot compute the gradient of the cost function you can use the numderivative function to estimate it. Serge Le 27/01/2016 16:54, fujimoto2005 a écrit : The feature of my

Re: [Scilab-users] 'fsolver'

Hi, Christophe I give a very small value as an initial point because it is known as the character of my actual problem that this small value is necessarily smaller than the smallest solution. But 'fsolver' gives the largest solution which is most apart from the initial point. Best regards.

Re: [Scilab-users] optim

Hi,mottelet Now I understand I don't need to provide the value of 'Ind '. As explained in the help page, 'the ind input argument is a message sent from the solver to the cost function ' . Also I understand I have to provide the gradient explicitly even if I don't need its value. Unless an user

[Scilab-users] 'fsolver'

if f(x)=0 has multiple solutions and I want to get the smallest solution, is there any way to get a such solution by 'fsolver'? In my actual problem, 'fsolver' give the largest solution. Best regards -- View this message in context: http://mailinglists.scilab.org/fsolver-tp4033340.html Sent

Re: [Scilab-users] 'fsolver'

Hello, > De : fujimoto2005 > Envoyé : mercredi 27 janvier 2016 15:24 > > if f(x)=0 has multiple solutions and I want to get the smallest solution, is > there any way to get a such solution by 'fsolver'? > In my actual problem, 'fsolver' give the largest solution. I'm afraid the solution you

Re: [Scilab-users] 'fsolver'

Of course, read "guess" instead of "guest" (-: -- Christophe Dang Ngoc Chan Mechanical calculation engineer -Message d'origine- De : Dang Ngoc Chan, Christophe Envoyé : mercredi 27 janvier 2016 16:00 À : 'Users mailing list for Scilab' Objet : RE: [Scilab-users]