The Lone Log

Algebra Level 1

log ( 1 ) = ? \Large \log\left(1\right) = \ ?

0 0 -\infty undefined 1 1

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7 solutions

Anne Beatriz
Mar 9, 2016

This is simple, given the logarithm definition log a b = x a x = b \log_{a}b=x \Rightarrow a^x=b so log 10 1 = w 1 0 w = 1. \log_{10}1=w \Rightarrow 10^w =1. Hence w = 0 w = 0 .

Fact: When there appears the base of a logarithm, indicates that the base is 10.

I always know that log 1 = 0 \log1 = 0 , no need to count

Haha, very good!

Ashish Menon - 5 years ago

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LOL, great one huh

Jason Chrysoprase - 5 years ago

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Yep. (+1) ;)

Ashish Menon - 5 years ago

What if base is 1?

Murugesh M - 2 years, 6 months ago
Harshit Mittal
Mar 8, 2016

If log x = L,
then b L b^L = x (where b = base of the log)

Put x = 1
b L b^L = 1
But we know b 0 b^0 = 1
Therefore L = 1.


any number raise to zero is one

lorenz navales - 5 years, 3 months ago

L=0 bud, not 1

Timothy Vu - 5 years, 3 months ago
Aaryan Vaishya
Nov 13, 2018

The logarithm operation for any base asks that we find the power required to make the base equivalent to the value.We use the fact that for general x>0(don't know about x=0),x^0=1,therefore for our trivial expression the answer is 0.

Drew Davis
Mar 17, 2016

Since no base is included, we assume it is 10. So the logarithm base 10 of 1 is zero because 10 raised to the power of 0 (or rather, any number raised to the power of 0) is 1.

By the rules of Logarithm log ( 1 ) = 0 \log(1) = 0 . Follow the rules to make you perfect.

Lorenz Navales
Mar 9, 2016

The logarithm of x=1 is the number y we should raise the base b to get 1. The base b raised to the power of 0 is equal to 1, b0 = 1 So base b logarithm of one is zero: logb(1) = 0 For example, the base 10 logarithm of 1: Since 10 raised to the power of 0 is 1, 100 = 1 Then the base 10 logarithm of 1 is 0. log10(1) = 0

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