Question

How to calculate antilog of -0.8684 ???

Answer 1

For antilog of negative numbers.

add and subract 1

1  - 0.8684 -  1

0.1316 - 1

-1 + 0.1316

Now see the  table of antilog for 0.1316  and  -1 becomes 10-1

1.3539 x  10-1  Answer