Math Problem Statement

Use the graphs of f and g to evaluate the functions: (a) (f - g)(2), (b) (fg)(3).

Solution

Let's analyze the graphs and the questions.

You are given two graphs, y=f(x)y = f(x) on the left and y=g(x)y = g(x) on the right, and the following tasks:

(a) (fg)(2)(f - g)(2):

This means you need to calculate f(2)g(2)f(2) - g(2).

  • Look at x=2x = 2 on both graphs.
    • For f(x)f(x) (left graph), at x=2x = 2, the function value is f(2)=2f(2) = 2.
    • For g(x)g(x) (right graph), at x=2x = 2, the function value is g(2)=3g(2) = 3.

Thus, (fg)(2)=f(2)g(2)=23=1(f - g)(2) = f(2) - g(2) = 2 - 3 = -1.

(b) (fg)(3)(fg)(3):

This means you need to calculate f(3)×g(3)f(3) \times g(3).

  • Look at x=3x = 3 on both graphs.
    • For f(x)f(x) (left graph), at x=3x = 3, the function value is f(3)=3f(3) = 3.
    • For g(x)g(x) (right graph), at x=3x = 3, the function value is g(3)=2g(3) = 2.

Thus, (fg)(3)=f(3)×g(3)=3×2=6(fg)(3) = f(3) \times g(3) = 3 \times 2 = 6.

Final Answers:

  • (a) (fg)(2)=1(f - g)(2) = -1
  • (b) (fg)(3)=6(fg)(3) = 6

Would you like further explanations or details on any part?

Related Questions:

  1. What is f(1)g(1)f(1) - g(1)?
  2. How would you compute (fg)(1)(fg)(1)?
  3. Can you find f(0)g(0)f(0) - g(0)?
  4. What is (fg)(4)(f - g)(4)?
  5. How do you calculate (fg)(0)(fg)(0)?

Tip:

Always make sure to read the values from the graph carefully, focusing on the corresponding yy-values for the given xx-coordinates.

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Math Problem Analysis

Mathematical Concepts

Function Evaluation
Graph Interpretation
Arithmetic Operations on Functions

Formulas

(f - g)(x) = f(x) - g(x)
(fg)(x) = f(x) * g(x)

Theorems

None

Suitable Grade Level

Grades 9-12