pde_bihar44stl_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) + 2*u(x,y,z,t) = f(x,y,z,t) f(x,y,z,t) := 10.0*(sin(x)*cos(y)*cos(z)*cos(t) - sin(x)*cos(y)*sin(z)*sin(t) - sin(x)*sin(y)*sin(z)*cos(t) - sin(x)*sin(y)*cos(z)*sin(t) + cos(x)*sin(y)*cos(z)*cos(t) - cos(x)*sin(y)*sin(z)*sin(t) + cos(x)*cos(y)*sin(z)*cos(t) + cos(x)*cos(y)*cos(z)*sin(t)) in the hyper cube xmin< x