INFINITE SERIES 



I2S 



log 



iii 



where s n = - + - + - 

 123 



14. 



(See 1.876). 



6.445 (See 6.705.) 



4* 2X 2 + 2x* l g i-x i-2.3 + 2^ + 3.4.5 





3. 



6.455 



i. -log (i + x) -log (i - x) = x z + i - " + - 



3 4 5 3 



2. - 

 2 



i -f x 



i i V 6 / iii i\x 1 

 __ + __ +I __ + ___ + _\ 



3 5/3 V 3579/5 



6.456 



I. COS < k log (x 



2 i 



' 



4! 



2 2) (# + 4 2) 



6! 



