Placing the cursor to 98 on the right-hand scale of A (since −2 is an
_even_ number of digits), it is seen that the coinciding number on D
is 99. As the number of digits in the number is −2, the number of
digits in the root will be (−2)/(2) = −1. It will therefore be read as
0·099 [0·09899+].
EX.—Find √(0·098).
The number of digits is −1, so under 98 on the left scale of A, we
find 313 on D. By the rule the number in the root will be (−1 +1)/(2)
= 0, and the root is therefore read as 0·313 [0·313049+].