Math Problem Statement

Given: f(x) = x^3 + 2x - 3 and g(x) = 3x - 2. Find (f/g)(2).

Solution

The problem asks us to evaluate (fg)(2)\left( \frac{f}{g} \right)(2), where:

  • f(x)=x3+2x3f(x) = x^3 + 2x - 3
  • g(x)=3x2g(x) = 3x - 2

Steps:

  1. First, we need to find f(2)f(2) and g(2)g(2).

    For f(x)=x3+2x3f(x) = x^3 + 2x - 3, substitute x=2x = 2: f(2)=23+2(2)3=8+43=9f(2) = 2^3 + 2(2) - 3 = 8 + 4 - 3 = 9

    For g(x)=3x2g(x) = 3x - 2, substitute x=2x = 2: g(2)=3(2)2=62=4g(2) = 3(2) - 2 = 6 - 2 = 4

  2. Now, compute (fg)(2)\left( \frac{f}{g} \right)(2), which is f(2)g(2)\frac{f(2)}{g(2)}: (fg)(2)=94\left( \frac{f}{g} \right)(2) = \frac{9}{4}

Thus, the answer is 94\frac{9}{4}.

Would you like more details or have any questions?

Related Questions:

  1. How do you find the domain of f(x)g(x)\frac{f(x)}{g(x)}?
  2. What happens if g(x)=0g(x) = 0 at some value of xx?
  3. Can we simplify the fraction further if it were different?
  4. How do you find the derivative of f(x)g(x)\frac{f(x)}{g(x)}?
  5. How does f(x)g(x)\frac{f(x)}{g(x)} behave as xx approaches infinity?

Tip: Always ensure the denominator g(x)g(x) is non-zero before dividing!

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Math Problem Analysis

Mathematical Concepts

Algebra
Functions
Division of Functions

Formulas

f(x) = x^3 + 2x - 3
g(x) = 3x - 2
(f/g)(x) = f(x) / g(x)

Theorems

Basic Function Operations

Suitable Grade Level

Grades 9-12