PAR J. PLANA 295 



[6]'... $ifndt-^i\ = 



3/»' r , r ,,. /a\' 

 e j natj ndl5\nu\ -I 



_H lH^ ."Lj^ndtfUndt \ r'sinw — j/T=r? . r'cosM j 



-\ I ndl{ I — ecosw)M -1 



-— '.^yV«^«jr'(cosM — e)-4-j/~7^:r?.r"sinMJ ; 



[7]'... e$? = 



3to' . 



— e* I ndt I ndtsvaui - i 



H J ndt \-\\ 2e( I — ecosw)*— ( i — e')(coSM — e)| 



->f-.-^y i—e'fundt(^\ j r^Yi— e*— 7'"sina{cosM— e)[ 

 — ^.-efundt\ T'{cosu—e)-^y i—e. T"%mu\ ; 

 [8]'... sJ^idl=—e/'ndtJldtsiou(-\' 



^lUi.^JlidtJUndtl^) Jrsin«-f/Tir?.r'coswj . 



