Math Problem Statement
Solution
Let's analyze the graph and answer the questions:
a. Determine a piecewise equation for .
The graph consists of three distinct parts:
- A parabola (a quadratic function) from to .
- A linear segment (a constant function) from to .
Step 1: Parabola
The parabola appears to open upward and passes through the points , , and . Let's assume it is of the form: Using the points , , and , we can solve for , , and .
- At , gives , so the equation becomes .
- At , , we get → (Equation 1).
- At , , we get (Equation 2).
Solving this system of equations: From Equation 1: . Substitute into Equation 2: Substitute into :
Thus, the equation of the parabola is: This is valid for .
Step 2: Constant Line
The constant part is a horizontal line from to , where .
Thus, the piecewise function for is:
\begin{cases} \frac{1}{10}x^2 - \frac{7}{10}x, & \text{for } -3 \leq x \leq 2 \\ -1, & \text{for } 2 < x \leq 4 \end{cases}$$ --- ### b. Determine the interval(s) where $$f(x)$$ is increasing. The graph shows that $$f(x)$$ is increasing on the interval: $$(0, 2]$$ --- ### c. Determine the interval(s) where $$f(x)$$ is decreasing. The graph shows that $$f(x)$$ is decreasing on the interval: $$[-3, 0]$$ --- ### d. Determine the interval(s) where $$f(x)$$ is constant. The graph shows that $$f(x)$$ is constant on the interval: $$(2, 4]$$ --- Would you like further details or clarifications on any of these points? ### 5 Related Questions: 1. How do we find the derivative of the quadratic equation $$f(x) = \frac{1}{10}x^2 - \frac{7}{10}x$$? 2. What are the critical points of the function $$f(x)$$ on the interval $$[-3, 4]$$? 3. How do we determine concavity from a graph or an equation? 4. How do piecewise functions behave when differentiating at the boundary points? 5. What is the significance of intervals where a function is increasing or decreasing? ### Tip: When identifying increasing or decreasing intervals, it's helpful to look for turning points where the slope changes from positive to negative or vice versa (like local maxima or minima).Ask a new question for Free
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Math Problem Analysis
Mathematical Concepts
Piecewise Functions
Quadratic Functions
Graph Interpretation
Formulas
Quadratic equation: f(x) = ax^2 + bx + c
Constant function: f(x) = k
Theorems
Slope Analysis for Increasing/Decreasing Intervals
Suitable Grade Level
Grades 9-12
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