Algebra Practice Problems
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Questions and Answers

What is the expression obtained when finding (f-g)(x) if f(x) = 2x - 4 and g(x) = x - 2?

  • x + 6
  • x + 2
  • x - 2
  • x - 4 (correct)
  • What is the result of finding (f+h)(x) where f(x) = 2x - 4 and h(x) = x - 2?

  • 3x + 2
  • 3x - 6 (correct)
  • x - 6
  • 2x - 2
  • What is (f.g)(x) when f(x) = 1 and g(x) = √x?

  • 2x
  • √x (correct)
  • x
  • What is the simplified result of (f/h)(x) if f(x) = 1 and h(x) = √x?

    <p>1</p> Signup and view all the answers

    If f(x) = x² + 3 and h(x) = x - 3, what is fo h(2)?

    <p>4</p> Signup and view all the answers

    Given f(x) = x + 2 and g(x) = 2x + 4, what is (fog)(x)?

    <p>6x + 2</p> Signup and view all the answers

    What is the result of (f-h)(x) where f(x) = 2x - 4 and h(x) = x - 2?

    <p>x - 4</p> Signup and view all the answers

    What is the expression found for (f+h)(x) if f(x) = 1 and g(x) = √x?

    <p>√x + 1</p> Signup and view all the answers

    What is F(-1)?

    <p>-5</p> Signup and view all the answers

    What is F(x + 2)?

    <p>x - 2</p> Signup and view all the answers

    Given f(x) = x - 2 and g(x) = 3x + 7, what is (f + g)(x)?

    <p>4x + 5</p> Signup and view all the answers

    If f(x) = 2x + 2 and h(x) = 3x, find (f - h)(x).

    <p>1 + x</p> Signup and view all the answers

    If v(x) = 2x - 7 and g(x) = x + 3, find (v + g)(x).

    <p>3x - 4</p> Signup and view all the answers

    If f(x) = x² + 2x + 4 and p(x) = x + 2x - 8, find (f - p)(x).

    <p>x² + x - 12</p> Signup and view all the answers

    If f(x) = x + 3 and p(x) = 2x - 7, find (f . p)(x).

    <p>2x² - x - 21</p> Signup and view all the answers

    What is (f . h)(x) if f(x) = 2x - 4 and h(x) = x - 2?

    <p>x - 4</p> Signup and view all the answers

    What is (f - h)(x) given f(x) = 2x - 4 and h(x) = x - 2?

    <p>x</p> Signup and view all the answers

    What is (f + h)(x) if f(x) = 2x - 4 and h(x) = x - 2?

    <p>3x - 6</p> Signup and view all the answers

    What is (f / h)(x) given f(x) = 2x - 4 and h(x) = x - 2?

    <p>2</p> Signup and view all the answers

    What is (f o g)(x) if f(x) = x + 2 and g(x) = 2x + 4?

    <p>6x + 2</p> Signup and view all the answers

    What is (g o f)(x) for f(x) = x + 2 and g(x) = 2x + 4?

    <p>2x - 6</p> Signup and view all the answers

    What is (g o g)(x) for g(x) = 2x + 4?

    <p>8 + 2x</p> Signup and view all the answers

    What is (f o f)(x) for f(x) = x + 2?

    <p>2x + 4</p> Signup and view all the answers

    If f(x) = x² + 3 and h(x) = x - 3, what is fo h(2)?

    <p>4</p> Signup and view all the answers

    Study Notes

    Functions and Operations

    • Functions can be combined through various operations such as addition, subtraction, multiplication, and division.
    • For composite functions, the notation (f o g)(x) indicates that function g is applied first, and then function f is applied to the result.

    Algebra Practice Questions

    • Various problems require identifying the correct outcomes for defined functions.
    • The range of functions includes linear functions, quadratic functions, and polynomials.

    Function Evaluations

    • Given specific functions, evaluations and simplifications should lead to precise results.

    Sample Function Operations

    • Addition Example: Given f(x) = 2x - 4 and g(x) = x - 2, (f + g)(x) = 3x - 6 and respectively simplifies whether the terms combine appropriately.
    • Subtraction Example: For (f - g)(x), this can yield direct results reflecting differences in the functions.
    • Multiplication Example: (f g)(x) calculates the product and highlights how multiplication of functions operates in relation to their components.
    • Division Example: Determining (f/g)(x) gives insight into how functions relate as quotients.

    Function Compositions

    • Composition functions such as (f o g)(x) result in new functions that highlight relationships between f and g.
    • The order of composition significantly impacts the outcome; (g o f)(x) may differ in value from (f o g)(x).

    Example Outcomes

    • Specific outcomes from the practice problems showcase different results based on operations:
      • Example: (f + g)(2) for f(x) and g(x) defined above can yield 6.
      • Composite results can lead to complex simplified forms, illustrating the depth of function relationships.

    Algebraic Identities

    • Certain combinations yield unique identities:
      • For instance, (f + g) can yield either a linear or a quadratic depending on the base functions involved.

    Function Outcomes

    • Recognizable patterns emerge in functions, such as repeating forms in domains defined by the same or similar bases.
    • Simplified calculations and patterns help clarify principles governing function operations.

    Problem-Solving Approach

    • When finding functions, crucially check combinations and order to ensure accurate calculations.
    • Review each function definition before applying operations to maintain clarity and accuracy in outcomes.

    Functions and Operations

    • Functions can be combined through various operations such as addition, subtraction, multiplication, and division.
    • For composite functions, the notation (f o g)(x) indicates that function g is applied first, and then function f is applied to the result.

    Algebra Practice Questions

    • Various problems require identifying the correct outcomes for defined functions.
    • The range of functions includes linear functions, quadratic functions, and polynomials.

    Function Evaluations

    • Given specific functions, evaluations and simplifications should lead to precise results.

    Sample Function Operations

    • Addition Example: Given f(x) = 2x - 4 and g(x) = x - 2, (f + g)(x) = 3x - 6 and respectively simplifies whether the terms combine appropriately.
    • Subtraction Example: For (f - g)(x), this can yield direct results reflecting differences in the functions.
    • Multiplication Example: (f g)(x) calculates the product and highlights how multiplication of functions operates in relation to their components.
    • Division Example: Determining (f/g)(x) gives insight into how functions relate as quotients.

    Function Compositions

    • Composition functions such as (f o g)(x) result in new functions that highlight relationships between f and g.
    • The order of composition significantly impacts the outcome; (g o f)(x) may differ in value from (f o g)(x).

    Example Outcomes

    • Specific outcomes from the practice problems showcase different results based on operations:
      • Example: (f + g)(2) for f(x) and g(x) defined above can yield 6.
      • Composite results can lead to complex simplified forms, illustrating the depth of function relationships.

    Algebraic Identities

    • Certain combinations yield unique identities:
      • For instance, (f + g) can yield either a linear or a quadratic depending on the base functions involved.

    Function Outcomes

    • Recognizable patterns emerge in functions, such as repeating forms in domains defined by the same or similar bases.
    • Simplified calculations and patterns help clarify principles governing function operations.

    Problem-Solving Approach

    • When finding functions, crucially check combinations and order to ensure accurate calculations.
    • Review each function definition before applying operations to maintain clarity and accuracy in outcomes.

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    Description

    Test your algebra skills with these practice problems focused on functions and operations. Each question presents a scenario requiring you to choose the correct answer from multiple choices. Sharpen your understanding of algebraic functions and their combinations!

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