F R M VLA R F fc 131 



Theoremata. 



pofito #:=V(j&-f-£2Z) 



-. /.. ,f+S zz ,f+Z zz r, ,hxx—f 



II. /^«Vt— 7-— =*Vt— f feV — r- 



7 h-tkzz h+kzz J g-kxx 



r. */ f -*-* ** 



pofiro^zrVT— - s 



trr rj ^ f+Z zz ,s f+£ zz M-fo n -,/ 



i-hxx 



bi-kzz" b+kzz* k J " g+(fk-gb)xx 

 pofito *= v( ^^7, 



•^ /? T to £ J+gzz* k J Jxx-b 

 hA-kzz 



yl -J azY b+kzz~ b' az f+ S zz* gb > aX &b-fk\kxx 

 pofito *z=V (/-)-£zz) 



Vll.J**? b-ikzz"b ja ^ J+gzz+ hk J(tXY jk-gb-Yzxx 

 pofito j;=y(j& + h2) 



^^*'^*'*&« 



R 2 vbi 



