QUADRATURE of the CONIC SECTIONS, &c. 327 



1 



x + 1 x — 1 



X + I __ 1 1 



T^Ti - ~ " 2 1 



2 (tf * I ) X 2 -f- I 



I 



1 1 4 1 4 

 X-f 1 X+I X I 



+ * 



i L ' 4 £ 



2 (#* i) 4 (# 4 i) X 4 + I 



1 



4 1 8 1 8 



ff-f 1 X -f* I X I 



= + I 



L L 8 I 



4(x 4 +i) 8 (* — 1) x +1 



iti 



8 16, 16 

 X I X -f- 1 X I 



--+3 



8 (a + 1) 16 (x — 1 x -}- 1 



I 



2 (x -f- i) X + I * — I 



= + 1 



1 1 ' ryjl f ' 



m(x — 1) m (x — 1) x +1 



Let the fum of thefe equations be now taken, and the 

 quantities found on both fides of the refult reje&ed, then, af- 

 ter 



