=z (ff + pot^ + /oy'j. 



d^(dFi) _ fdV\ fd^V\ (dV\ (i^V\ fd*T^\ 



dz^ ~^{dz) \^)'^^['d^/\d^j\'d^) 



>^rfa6"-^ "■ '^ ^ dT^ J- "" v. dz7 /. 



fiet adeo per Theoreraa TAYiiOarANUM: 



2 .3,..o \. dz J- . , 



2* Z*" ^ . 2* 



z 2 . J 2.4 



z > 4 .J 2.4.0 



