Guest wrote:A follow-up question;
In the book link provided, example to find 72054 (not in table);
72050 = 4.85763
72060 = 4.85769
Difference = 0.00006
A change of 4 in number is 0.4 * 0.00006 = 0.00002
My question: Is the "4" used from the last digit in 72054 ?
The number 6 in
red was to fix a possible mistake, right?
But the 4 used is the last digit, you're right!
But you don't need to do this account.
See:
- 700 - Logarithms of Numbers
- Captura de Tela 2019-11-03 às 00.42.38.png (380.98 KiB) Viewed 121 times
In the table has a auxiliary table with 7 and 6 (the difference between two given logs).
In the case, we want 72054, right?
72050 => 85763
72060 => 85769
The difference is 6, right?
But we want a new digit of 4, right?
So, in the table column 6, line 4, you have 2.4
85763+2.4=85765.4
Now you can give the log:
log 72054 = 4,857654, ok?
Try another values!