48 
MEMORIAL ClENTlFlCAS I LITER ARIA IS 
Leibnitz: 
1 , 1 . 1 
7 r = 1 — |- 
3 1 5 7 
“ V + 
7. f-./" - 2 x =■ f( 1 - K 
J a +x 2 J V a- 
a" + a 4 
+ • 
_ JL xS i x 5 
~ X 3 a 9 + IT a 4 
a arc tg 
1 x 3 1 x ; 
X 3 a 2 + 5 a 4 
Esta es la serie de Santiago Gregory, (1671) 
Haciendo x — ]/ 3 se obtienela del Dr. Halley, 
o 
(Colin Mac Laurin, 604) 
f YT 
IT 
9. / Y 
x~ = x 
JL_ x s L_ xI _ 
40 112 X 
(Millar, 37) 
a 2 -r x 2 =ax+ — - + 
6 a 4a 3 
+ 
(Stone, 23) 
10. f Y a 2 — x 2 =ax — X ™ - X 5 
J x 6 a 4a 3 112a 5 
