Aug 14, 2020 · As the title states, I need to be able to calculate logs (base $10$) on paper without a calculator. For example, how would I calculate $\\log(25)$?

Feb 14, 2016 · I would need to be able to compute logarithms without using a calculator, just on paper. The result should be a fraction so it is the most accurate. For example I have seen this …

86 I would like to know how logarithms are calculated by computers. The GNU C library, for example, uses a call to the fyl2x() assembler instruction, which means that logarithms are …

To do this, first calculate, by any means available, the base 10 logs of 1/0.5, 1/0.9, 1/0.99, and 1/0.999. Multiply your target number by these factors (easy on soroban because it is a shift …

Apr 23, 2017 · I have seen people look at log (several digit number) and rattle off the first couple of digits. I can get the value for small values (aka the popular or easy to know roots), but is …

Oct 5, 2019 · Yes but my question still remains, one way or another. You still need to compute $\ln (0.25551879)$ and also $\ln (10)$. And yes log of 10 is already computed, but what with …

If you memorize more logarithms of small integers and/or memorize $\log_2 5$ to more precision you can do even better. For example, suppose you want to estimate $\log_2 75$.

Dec 30, 2011 · How can I replace the $\log (x)$ function by simple math operators like $+,-,\div$, and $\times$? I am writing a computer code and I must use $\log (x)$ in it. However, the …

Jul 5, 2020 · I want to calculate the logarithm of any base completely by hand. I don't want to use a calculator, tables or predefined numbers. The only mathematical functions available for the …

I have read through questions like Calculate logarithms by hand and and a section of the Feynman Lecture series which talks about calculation of logarithms. I have recognized neither …