finding the Value of an infinite Series. 
.025,979,075,500, 
- .024,019,115,661, x~ 
- .001,685,014,492, X ==ji 
=■ .000,220,890,082, X 
- .000,040,758,383, x 
- .000,009,445,579, X -==p 
- -000,002,586,131, X 
- .000,000,805,501, X 
- 8cc. 
This is the general value of the faid differential feries, 
whatever may be the value of x, or — . But in the cafe 
here fuppofed of an arch of 90% the verfed fine v is 
equal to the finer; and therefore ~y, or x, is = 1, and 
^ or j. Therefore the foregoing differential 
feries is in this cafe equal to 
- 025>979>°75,S0©> 
- .024,019,115,661, x * 
- .001,685,014,492, X “ 
- .000, 
