Math Problem Statement

Use the graphs of functions f and g to find the following values: f(1), g(1), (f + g)(1), f(2), g(2), and (f - g)(2).

Solution

To solve this, let’s analyze the graphs of functions ff and gg provided in the images to find the requested values.

From the Graphs:

The values for each function at the specified points can be observed directly from the graphs.

For f(1)f(1):

Locate x=1x = 1 on the ff graph and identify the corresponding yy-value.

  • f(1)=2f(1) = 2

For g(1)g(1):

Locate x=1x = 1 on the gg graph and identify the corresponding yy-value.

  • g(1)=1g(1) = -1

For (f+g)(1)(f + g)(1):

Use the result from f(1)f(1) and g(1)g(1):

  • f(1)+g(1)=2+(1)=1f(1) + g(1) = 2 + (-1) = 1
  • (f+g)(1)=1(f + g)(1) = 1

For f(2)f(2):

Locate x=2x = 2 on the ff graph and identify the corresponding yy-value.

  • f(2)=0f(2) = 0

For g(2)g(2):

Locate x=2x = 2 on the gg graph and identify the corresponding yy-value.

  • g(2)=3g(2) = 3

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

Use the result from f(2)f(2) and g(2)g(2):

  • f(2)g(2)=03=3f(2) - g(2) = 0 - 3 = -3
  • (fg)(2)=3(f - g)(2) = -3

Summary of Answers:

  1. (a) f(1)=2f(1) = 2
  2. (b) g(1)=1g(1) = -1
  3. (c) (f+g)(1)=1(f + g)(1) = 1
  4. (d) f(2)=0f(2) = 0
  5. (e) g(2)=3g(2) = 3
  6. (f) (fg)(2)=3(f - g)(2) = -3

Would you like a more detailed explanation of each calculation or assistance with similar problems? Here are some related questions to deepen your understanding:

  1. How would you determine (f+g)(x)(f + g)(x) for other values of xx?
  2. What steps would you follow to calculate (fg)(x)(f \cdot g)(x) for given points?
  3. How does adding or subtracting function values affect the graph shape?
  4. What other transformations can be observed when combining functions?
  5. How can you find the domain and range of the combined functions f+gf + g and fgf - g?

Tip: Always double-check function values from graphs by carefully tracing the yy-coordinates for given xx-values to avoid errors.

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Math Problem Analysis

Mathematical Concepts

Function Evaluation
Graph Interpretation
Function Addition and Subtraction

Formulas

f(x) + g(x)
f(x) - g(x)

Theorems

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Suitable Grade Level

Grades 9-10