Question

What is the domain of the cubic function f(x)= 9x³ + 2x-12 ?

Answer 1

GIVEN:

We are given the function below;

`f(x)=9x^3+2x-12`

Required;

To find the domain of the cubic function.

Step-by-step solution/explanation;

The domain of a function is the set of all input values (that is, x values) for which the function is defined.

For the function given, there is no constraint, which means the function is always true for any value of x.

Therefore,

ANSWER:

`Domain=(-\infty,+\infty)`

The domain is the set of all real numbers.

Option B