Math Problem Statement

Identify the domain and then graph the function. f left parenthesis x right parenthesis equals RootIndex 3 StartRoot x EndRoot minus 2

Solution

To identify the domain of the function f(x)=x32f(x) = \sqrt[3]{x} - 2, we need to analyze the domain of the cube root function.

Step 1: Identify the Domain

For cube roots, there are no restrictions on the input xx because cube roots are defined for all real numbers (positive, negative, and zero). Therefore, the domain of f(x)=x32f(x) = \sqrt[3]{x} - 2 is all real numbers.

Domain: (,)(-\infty, \infty)

Step 2: Graph the Function

The graph of f(x)=x32f(x) = \sqrt[3]{x} - 2 can be plotted as follows:

  • The function is based on x3\sqrt[3]{x}, which passes through the origin (0,0).
  • The transformation 2-2 means the entire graph of x3\sqrt[3]{x} is shifted down by 2 units.
  • The curve approaches negative infinity on the left as xx \to -\infty, and increases gradually on the right as xx \to \infty.

If you'd like, I can plot this graph for you.

Let me know if you would like the graph or more details! Here are some related questions:

  1. How does the transformation f(x)2f(x) - 2 affect the shape of a general function?
  2. What is the range of f(x)=x32f(x) = \sqrt[3]{x} - 2?
  3. Can cube root functions have horizontal asymptotes?
  4. How would the graph change if the function was f(x)=x3+2f(x) = \sqrt[3]{x} + 2?
  5. How does the domain of cube roots differ from square roots?

Tip: Cube root functions, unlike square roots, can accept negative inputs, which is why their domain is all real numbers.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Domain and Range

Formulas

Cube root function f(x) = ∛x

Theorems

Properties of cube root functions

Suitable Grade Level

Grades 10-12