more exafUy v 
X 
( ^14) 
X X 
2. X 
that is 
I. 
2. 
— X 
X V 
X 
X X 
X X 
when X it v~\ 
2 
o. 
X 
X V 
.XX 
X *~T 
2 X 
X 
when — X x v 4 &c, — o. 
X • 
X X 
2 X 
X 
xx 
X -| : 
2 X 
• . X V 
when X — ic -y -| &c. = o. 
2 
when — X — i -v + - — &c. = o. 
This Formula, will alfo triplicate the number of true 
Figures in s. And the Calculation may be repeated, af- 
^ter every Operation, taking for a Divilor + 
2 
ic , X X 
— ~\ 1- ^jrc. inftead of at -] 
1.2.3 ^*^‘3 *4 ^ ^ 
Dr. HalUf has fully explain’d the manner of ufingboth 
thele Formulas in -Equations of the common Form; 
wherefore I fliall be the Ihorter in explaining two or 
three Examples of another fort. 
Ex. I. Let it be propofed to find the Root of this E- 
quation — 16 — 0. In this Cafe, for 
y writing 2, and for o writing x, we have -\- i\^'' 
