:o 4 -] 



-1 



PLANE MOTION. 



. x v WITT 



n 



sin 



mir 



m-rr . mir 



sin 2 m-rr cos cos 2 tmr sin 



ii n n 



n 



2 2 . WTT 



sm 



109 



We have, therefore, finally 



:kth m = i, 2, 3, n i. 



203. It remains to p 

 Voting (27) in the form 



27T 



f 

 2/f 



f(n I)TT\ . ( I) 

 f ^ ^-Jsin f^__2 



/ x 

 (27) 



203. It remains to pass to the limit when n = oo and vanishes. 



e obviously have in the limit 



2 C* 



B m =- I / 



TTc/O 



2, 3, 



(28) 



Fig. 50. 



204. As an application let us determine the series representing the 

 roken line formed by the two sides of an isosceles right-angled triangle 

 r hose hypotenuse lies in the axis of x (Fig. 50). 



