AI.<;I:I;KA. 



47 



<> T + , 



3n _ 2c*-f 1 



i 2 + . . . to oo ~ 5c* 2 * 



213. Prove that 

 0) 



(2) 

 (3) 



1 1 1 2n 



-4-1-4-.. .tow quotients = ?i + 1 ' 



1 1 1 n 



-1-4-1-.. .ton quotients ~ 2 (n + 1) ' 



1 4 9 



n a 1 1 



= +++ - 



119 25 (2n-l) 1 1 1 



l-4-8-T2-...-~l^T' =1 + 3' h 5 + - + 27^T' 



! * (JL+ 1 )' 



r-LV+1- 2r+3 



-2(r+?i)-l 



_1 4 _1_ 1 



~~ r r+1 '" r+7i 



1 1 

 -f - 

 a a + 6 



a f (a-1)' o f (a-1)' 

 1-"~1~-T- 1 -...ton 



a(n+2a-l) na 



/\t ^_^__ 



n+1 



n - 2a + 



terms 

 , as n is odd or even, 



-1 -... to 2 terms 



