Question

What is the domain of f(x) = 2^x?

Answer 1

The given function has no undefined points nor domain constraint. Thus, the domain is: $-\infty \: < x < \infty$.

Domain and Range

The domain of a function is the set of input values for which the function is real and defined. In the other words, when you define the domain, you are indicating for which values x the function is real and defined. An example, there is a restriction for the domain of fractions. The variable x in the denominator should be different of zero.

While the domain is related to the values ​​of x, the range is related to the possible values ​​of y that the function can have.

In this question, the function $2^x$ has no undefined points nor domain constraint. Therefore, the domain is: $-\infty \: < x < \infty$

Learn more about  the domain here:

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