28 return 2*log(cosh(
a)/cosh(
a*(1-2*x[0]))); }
36 return point(4*
a*tanh(
a*(1-2*x[0]))); }
see the Float page for the full documentation
see the point page for the full documentation
The combustion problem – inversion of the parameter function.
Float lambda2alpha(Float lambda, bool up=false)
point operator()(const point &x) const
grad_u(Float lambda, bool is_upper)
point operator()(const point &x) const
u_exact(Float lambda, bool is_upper)