Math Problem Statement

Which function has a greater maximum? f(x) = -2(x + 4)^2 + 1.

Solution

We are asked to compare the maximum values of two functions: f(x)=2(x+4)2+1f(x) = -2(x + 4)^2 + 1 and g(x)g(x) (represented graphically).

1. Analyze f(x)f(x):

  • The function f(x)=2(x+4)2+1f(x) = -2(x + 4)^2 + 1 is a quadratic equation in vertex form. The general form is a(xh)2+ka(x - h)^2 + k, where (h,k)(h, k) is the vertex.
  • In this case, the vertex occurs at x=4x = -4, and the maximum value of f(x)f(x) is k=1k = 1, because the parabola opens downwards (since a=2a = -2, which is negative).

Thus, the maximum value of f(x)f(x) is 1 at x=4x = -4.

2. Analyze g(x)g(x):

  • From the graph, the maximum value of g(x)g(x) occurs at x=3x = -3, and the maximum y-value is 3.

3. Conclusion:

  • f(x)f(x) has a maximum value of 1, and g(x)g(x) has a maximum value of 3.
  • Therefore, the function gg has a greater maximum than ff.

The correct answer is:

  • gg has a greater maximum than ff.

Would you like more details or have any questions? Here are some related questions to expand on this:

  1. How can we determine the vertex of a parabola in vertex form?
  2. How do changes in the coefficient of the quadratic term aa affect the graph?
  3. What is the importance of the vertex in finding maximum and minimum points?
  4. How would you find the maximum or minimum of a quadratic function in standard form?
  5. What is the domain and range of f(x)f(x) and g(x)g(x) based on their equations and graphs?

Tip: In vertex form, the sign of the coefficient aa determines whether a parabola opens upwards (minimum point) or downwards (maximum point).

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Math Problem Analysis

Mathematical Concepts

Algebra
Quadratic Functions
Graph Analysis

Formulas

Vertex form of a quadratic function: a(x - h)^2 + k

Theorems

Properties of quadratic functions related to vertex form

Suitable Grade Level

Grades 9-11