igB MATHEMATICAL FORMULA AND ELLIPTIC FUNCTIONS 



4. 



where 



(2k)l 

 k=i 



SPECIAL VALUES 



9.130 



3. 



X 



4. - 



T T/\ ^ f T / I ^ /^ 



- - /(,) - - | x - _ (x + -J (- 



1*2 



7 = 0.5772157 (6.602). 

 9.131 Limiting values for x = o: 



Jo(x) = i, 

 Ji(x) = o, 



