Math Problem Statement

what is the domian of \sqrt[3]{x+4}

Solution

The function given is f(x)=x+43f(x) = \sqrt[3]{x+4}, which is a cube root function.

Domain Analysis:

  • Cube roots, unlike square roots, can accept both positive and negative values as inputs.
  • The cube root function x3\sqrt[3]{x} is defined for all real numbers xx, meaning there are no restrictions on the input.

Thus, the function x+43\sqrt[3]{x+4} is defined for all real values of xx, because there are no values of xx that would make the expression inside the cube root undefined.

Domain:

The domain of f(x)=x+43f(x) = \sqrt[3]{x+4} is: (,)\boxed{(-\infty, \infty)}

Would you like any further explanation on cube roots or domains?

Here are 5 related questions:

  1. What is the domain of 2x5\sqrt{2x - 5}?
  2. What is the range of f(x)=x+43f(x) = \sqrt[3]{x+4}?
  3. How would the domain change for f(x)=x+4f(x) = \sqrt{x+4}?
  4. What is the graph of f(x)=x+43f(x) = \sqrt[3]{x+4} like?
  5. How do cube roots differ from square roots in terms of their domain and range?

Tip: Cube root functions are always defined for all real numbers, while square root functions are only defined for non-negative numbers under the square root.

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Domain and Range
Cube Roots

Formulas

f(x) = \sqrt[3]{x+4}

Theorems

Cube root functions are defined for all real numbers

Suitable Grade Level

Grades 9-12