Math Problem Statement

What is the range of the function y = ³√(x) + 8?

Solution

Let's analyze the function given in the problem:

y=x3+8y = \sqrt[3]{x} + 8

Step 1: Understanding the Cube Root Function

The cube root function, y=x3y = \sqrt[3]{x}, has a domain and range of all real numbers:

(,)(-\infty, \infty)

Since cube roots are defined for all real values of xx, adding 8 simply shifts the function vertically by 8 units. This does not affect the range—it remains all real numbers.

Step 2: Identifying the Correct Answer

From the multiple-choice options:

  • <y<-\infty < y < \infty ✅ (Correct)
  • 8<y<-8 < y < \infty ❌ (Incorrect, since yy can take any negative value)
  • **( 0 \leq y <

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Math Problem Analysis

Mathematical Concepts

Algebra
Graphing Radical Functions
Cube Root Functions

Formulas

y = ³√(x) + c

Theorems

Range properties of cube root functions

Suitable Grade Level

Grades 9-11