New question #127978 on DOLFIN: https://answers.launchpad.net/dolfin/+question/127978
Hello I want to solve a nonlinear PDE. In a variational formulation I have this nonlinear function of a trial function: a(u) = sgn(u)*pow(abs(u),n), where n doesn't have to be a natural number. I'd like to have this function even for negative values of u (and so I can't use simply pow(x,y)). How can I define such function? In general, how do you define a " more complicated " function which takes as an argument Function object (e.g. piecewise linear or a function which can't be defined by simple use of pow, sin, cos...) ? Thank you for any advice in advance Vlado -- You received this question notification because you are a member of DOLFIN Team, which is an answer contact for DOLFIN. _______________________________________________ Mailing list: https://launchpad.net/~dolfin Post to : [email protected] Unsubscribe : https://launchpad.net/~dolfin More help : https://help.launchpad.net/ListHelp
