Math Problem Statement

Find the largest value of x if g(f(x)) = 0 where f(x) = 2x - 3 and g(x) = x^2.

Solution

Given the problem statement:

We have two functions:

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

We are tasked to find the largest value of xx such that g(f(x))=0g(f(x)) = 0.

Step-by-Step Solution:

  1. Substitute f(x)f(x) into g(x)g(x): g(f(x))=(f(x))2g(f(x)) = (f(x))^2 Since f(x)=2x3f(x) = 2x - 3, we substitute: g(f(x))=(2x3)2g(f(x)) = (2x - 3)^2

  2. Set the equation to zero: (2x3)2=0(2x - 3)^2 = 0

  3. Solve for xx: To solve the above equation, we take the square root on both sides: 2x3=02x - 3 = 0 Solving for xx: 2x=32x = 3 x=32=1.5x = \frac{3}{2} = 1.5

So, the largest value of xx that satisfies the condition g(f(x))=0g(f(x)) = 0 is x=1.5x = 1.5.

Would you like more details or have any questions about this solution?

Related Questions:

  1. What happens to the value of xx if the condition is g(f(x))>0g(f(x)) > 0?
  2. How would you find the smallest value of xx that satisfies g(f(x))=0g(f(x)) = 0?
  3. What are the implications if g(x)g(x) was a different function, like a cubic function?
  4. How do we determine the range of the function g(f(x))g(f(x))?
  5. What is the graphical representation of the functions f(x)f(x) and g(x)g(x)?

Tip:

When solving composite function problems, always start by clearly defining the functions and substituting systematically to avoid errors.

Ask a new question for Free

By Image

Drop file here or Click Here to upload

Math Problem Analysis

Mathematical Concepts

Composite Functions
Algebra

Formulas

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

Theorems

-

Suitable Grade Level

Grades 8-10