Question

Which of the following is true?

-The base of a logarithmic function can be a negative number.
-A logarithmic function is the inverse of an exponential function
-The domain of the logarithmic function f(x) = log5x is all real numbers.
-The range of the function f(x) = log5x is all real numbers less than zero.

Answer 1

What i'm really sure of is: A logarithmic function is the inverse of an exponential function

Answer 2

well the bae of a log can be negative

Answer 3

oh wait no it cant lol

Answer 4

i don't think so since it's domain is ]0,+oo[ !!

Answer 5

i was thinking how -2^3 for example is -8 lol..forgot you'll need to divide by -1 before log-ing

Answer 6

thanks for all of the help :)

Answer 7

for the last two lines shouldn't it be: log5x=log1 to determine the domain??

Answer 8

anyway i think the other one that is true is: The domain of the logarithmic function f(x) = log5x is all real numbers.