Logarithm

A method to find logarithm with a plain calculator

Category:

Education

Tags:

• logarithm
• logarithms

[ilyforever023]

lol omg i dont get it.. O__O you guys are crazy smart..

[aegisforex]

Don't get it. You should spoke so we know what you're talking about.

[ashwinxxl]

grt stuff....made it easier for me...thanks a lot.

[domfalcolioni]

thumbs up if you went check if it was rigth

[vivek1471990]

it will take less time by logarithm table

[aparajita1194]

whaaaaaaaat??????????????

[gmayer66]

@gmayer66 For example: log(3) = 0.???, so the first digit of log(3) is 0. 3^10 = 59049. log(59049) = 4.???, so 4 is the second digit of log(3). 59049/10^4 = 5.9049. 5.9049^10 = 51537752.07 log(51537752.07) = 7.???, so 7 is the third digit of log(3). 51537752.07 / 10^7 = 5.153775207 5.153775207^10 = 13220708.19 log(13220708.19) = 7.???, so 7 is the fourth digit of log(3) So log(3) = 0.477...

[gmayer66]

Computing the first digit of the logarithm in base 10 is easy. log(23456) = 4.???, because 10^4 <= 23456 < 10^5.

The first digit of log in base 10 of (x^10) is the SECOND digit of log in base 10 of x.

All you need to do is raise the number to the 10th power and read off the first digit of its logarithm -- d. Then divide by 10^d to reset the decimal point to the right of the leftmost digit, and continue.

Check out the paper "Computing logarithms digit-by-digit" for a full explanation.

[Sham2951]

Nice...lol i dont get it... i rather use scientific calculator

[XxTONYDAGUNxX]

wow.....lets smoke some pot to this music while were at it...

[kala203]

Huh? hahahah...