(pn−nfrsθ+θsegi+,rna:osarθ∂n2i1∂2fnnf∂ucdϕsϕ∂θdtoiθϕhnt+∂∂f)θµeθϕϕp+,∂∂li+uunaϕθrdnb2frdiϕcsi+cai1tnathet2eisθn(Ltg3∂ha∂c2eflp2)ϕudlaiycdni,aaun(m(3r3,oi−c−up1θve2)ira)sanctodosr...