Math Problem Statement

Find the inverse function of f(x) = 10 + ∛x.

Solution

To find the inverse function f1(x)f^{-1}(x) for the given function f(x)=10+x3f(x) = 10 + \sqrt[3]{x}, follow these steps:

Step 1: Replace f(x)f(x) with yy

Let: y=10+x3y = 10 + \sqrt[3]{x}

Step 2: Swap xx and yy

For the inverse function, switch the roles of xx and yy: x=10+y3x = 10 + \sqrt[3]{y}

Step 3: Solve for yy

Isolate yy: x10=y3x - 10 = \sqrt[3]{y} Now, cube both sides to eliminate the cube root: (x10)3=y(x - 10)^3 = y

Thus, the inverse function is: f1(x)=(x10)3f^{-1}(x) = (x - 10)^3

Would you like further clarification or details?

Here are some related questions to practice:

  1. What is the domain and range of the inverse function f1(x)f^{-1}(x)?
  2. How would you verify if the inverse function is correct?
  3. What is the inverse of f(x)=10+x4f(x) = 10 + \sqrt[4]{x}?
  4. Can a function always have an inverse? Why or why not?
  5. How would you graph the function f(x)f(x) and its inverse?

Tip: To find the inverse of a function, always swap xx and yy, then solve for yy.

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Math Problem Analysis

Mathematical Concepts

Inverse Functions
Cube Roots
Algebra

Formulas

Inverse function: swap x and y, solve for y
Cube Root: y = ∛x

Theorems

Function Inverses
Basic Algebraic Manipulation

Suitable Grade Level

Grades 9-12