Solution 3.3:2a
From Förberedande kurs i matematik 1
(Difference between revisions)
m (Lösning 3.3:2a moved to Solution 3.3:2a: Robot: moved page) |
|||
Line 1: | Line 1: | ||
- | {{ | + | The logarithm |
- | < | + | <math>\text{lg }0.\text{1 }</math> |
- | {{ | + | is defined as that number which should stand in the (??) grey box in order that the equality |
+ | |||
+ | |||
+ | <math>10^{??}=0.1</math> | ||
+ | |||
+ | |||
+ | should hold. In this case, we see that | ||
+ | |||
+ | |||
+ | <math>10^{-1}=0.1</math> | ||
+ | |||
+ | |||
+ | and therefore | ||
+ | <math>\text{lg }0.\text{1}=-\text{1}</math>. |
Revision as of 13:05, 25 September 2008
The logarithm \displaystyle \text{lg }0.\text{1 } is defined as that number which should stand in the (??) grey box in order that the equality
\displaystyle 10^{??}=0.1
should hold. In this case, we see that
\displaystyle 10^{-1}=0.1
and therefore
\displaystyle \text{lg }0.\text{1}=-\text{1}.