The antilog tables
69.31×57.43
Is the same as 101.8408×101.7591 (see previous pages)
Add the indices:
This equals 103.5999
So how do we convert 103.5999 back to a normal number?
We can either use
1. Antilog tables
or
2. log tables in reverse
Antilog tables
Antilog 103.5999
Antilogs only work between 0 and 1
103.5999 = 103×100.5999
103=1000
And we must look up 0.5999
Here is part of the antilog tables:
3.972+8 (to the last digit) =3.980
Antilog table of 0.5999=3.980
So 103.5999=103×100.5999
Or 103.5999=1000×3.980
=3980
NOTE:
There is one other way to look up the antilog figure if you don’t have an antilog table and that is to use the log tables in reverse.
Antilog tables = Log tables in reverse
Antilog of 0.5999 but using log tables in reverse
Here is part of the log tables:
0.5999=3.980
(So this provides the same answer)