Question

1) e^-x has domain all real numbers = true why??
2) e^-x has range all real numbers = false why??

can someone please explain why the above is true and the other is false? i need to explain why

Answer 1

Do you understand why 1) is true?
We can work out why 2) is false, but do you understand 1)?

Domain is the x values that we're allowed to plug into the function.

Answer 2

yes, i forgot domain were the x values lol

Answer 3

For the outputs, the y values, the range,
just try plugging in some values to get an idea of what is going on.