Question

What is the domain of f(x) = 3x?

Answer 1

Answer:

C. All real numbers.

Step-by-step explanation:

We have been given a function $f(x)=3^x$. We are asked to find the domain of our given function.

We know that domain of a function is all values of x for which a function is real and defined.

We know that the domain of an exponential function is all real values of x that is $(-\infty,\infty)$.

Since our given function is an exponential function, therefore, domain of our given function is all real numbers.

Answer 2

The domain of a function is the set of input values the function can take.

The domain of f(x) = 3x is (c) all real numbers

The function is given as:

$f(x)=3x$

The above function is not restricted to any input value.

This means that, x can assume any real number as its value, and the function will still be defined.

Hence, the domain of f(x) = 3x is (c) all real numbers

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