Question

can somebody plz help me understand this??
log1/5 625

Answer 1

simply use calc.

Answer 2

idk how 2 plug it in

Answer 3

i wanna learn how to do it by my self plz help

Answer 4

\[\Huge \log \frac{1}{5}625 \]

Answer 5

Did youmean?
$$ log_{1/5} 625$$

Answer 6

is it this?

Answer 7

then it is -4

Answer 8

yes, how did you do it
/

Answer 9

who you?

Answer 10

By the definition of logarithm
$$log_ab=c <=> a^c=b $$
In your case a=1/5 b=625
$$(1/5)^{-4}=5^4=625$$
So -4 is the right answer. There is no way to calculate logarithms exept guessing or using calculators(or Taylor series, but then the value will not be exact)