Question

What is the domain of f(x) = log(x) + 7? & What is the domain of f(x) = log(x + 1) + 4?

Answer 1

The domain of the first function will be all positive real numbers.

Answer 2

thank you :D

Answer 3

You cannot take the log of zero, so the domain for the first one would be (-infin, 0), (0, infin), and the second one would be (-infin, -1), (-1, infin).

Answer 4

@dukeotherwise you included negative infinity in the domain of the first function, but you can't take the log of negative numbers.