Mammoth Memory

The antilog tables                                       

69.31×57.43

Is the same as 101.8408×101.7591 (see previous pages)

Add the indices:

First make the sum before looking at the antilog table

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:

First look up 0.59999 on the anti log table

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:

Anti logarithm tables are logarithm tables in reverse

0.5999=3.980                                                     

(So this provides the same answer)