pde_bihar44e_eq.java running. solve uxxxx(x,y,z,t) + uyyyy(x,y,z,t) + uzzzz(x,y,z,t) + utttt(x,y,z,t) + 2*uxx(x,y,z,t) + 2*uyy(x,y,z,t) + 2*uzz(x,y,z,t) + 2*utt(x,y,z,t) + 2*u(x,y,z,t) = f(x,y,z,t) f(x,y,z,t) := (y^4*z^4*t^4 + x^4*z^4*t^4 + x^4*y^4*t^4 + x^4*y^4*z^4 + 2*y^2*z^2*t^2 + 2*x^2*z^2*t^2 + 2*x^2*y^2*t^2 + 2*x^2*y^2*z^2 + 2) *exp(x*y*z*t) in the hyper cube xmin