Questions: What is the range of the function (f(x)=3x^3) ? (Enter (r) for all Real numbers.)
Transcript text: What is the range of the function $f(x)=3 x^{3}$ ? (Enter $r$ for all Real numbers.)
Solution
Solution Steps
Step 1: Identify the Type of Function
The given function is \( f(x) = 3x^3 \). This is a cubic function, which is a type of polynomial function.
Step 2: Determine the Behavior of the Function
Cubic functions have the general form \( ax^3 + bx^2 + cx + d \). The leading term \( ax^3 \) determines the end behavior of the function. Since the coefficient of \( x^3 \) is positive (3 in this case), as \( x \to \infty \), \( f(x) \to \infty \), and as \( x \to -\infty \), \( f(x) \to -\infty \).
Step 3: Determine the Range
Cubic functions are continuous and have no restrictions on their domain. They can take any real value as \( x \) varies over all real numbers. Therefore, the range of the function \( f(x) = 3x^3 \) is all real numbers.
Final Answer
The range of the function \( f(x) = 3x^3 \) is \(\boxed{r}\) (all real numbers).