pde_bihar44tl_eq.c running. solve uxxxx(x,y,z,t) + uyyyy(x,y,z,t) + uzzzz(x,y,z,t) + utttt(x,y,z,t) + 2*uxxyy(x,y,z,t) + 2*uxxzz(x,y,z,t) + 2*uxxtt(x,y,z,t) + 2*uyyzz(x,y,z,t) + 2*uyytt(x,y,z,t) + 2*uzztt(x,y,z,t) - 16*u(x,y,z,t) = f(x,y,z,t) f(x,y,z,t) := 0.0 in the hyper cube xmin< x