Math Problem Statement
State the parent function. Graph the parent function. Lastly, graph the transformed function and state transformed function and state the transformations. F(x)=-2(x+1)^2+1
Solution
Let's break this down step by step:
1. Identify the Parent Function:
The given function is .
The parent function is the simplest form of a function type without any transformations. In this case, the parent function is:
This is the basic quadratic function (a parabola), which opens upwards and has its vertex at .
2. Graph the Parent Function:
The graph of the parent function is a parabola with the following properties:
- Vertex:
- Axis of symmetry: (the y-axis)
- Opens upwards
- Symmetrical
3. Transformed Function and its Graph:
Now, let's analyze the transformed function .
Steps to describe the transformations:
-
Horizontal Shift: The term means the graph is shifted 1 unit to the left (opposite of the sign inside the parentheses).
-
Vertical Stretch and Reflection: The coefficient causes two changes:
- The negative sign indicates a reflection across the x-axis (the parabola flips upside down).
- The 2 indicates a vertical stretch by a factor of 2, making the parabola narrower.
-
Vertical Shift: The at the end means the graph is shifted 1 unit up.
Final Transformed Function:
Graph Properties:
- Vertex:
- Axis of Symmetry:
- Direction: Opens downwards (due to the reflection)
- Narrower Parabola: Because of the vertical stretch by a factor of 2
Summary of Transformations:
- Shift left by 1 unit
- Shift up by 1 unit
- Reflect across the x-axis
- Vertically stretch by a factor of 2
Graphing:
I can describe how the graph would look, but I could also generate a visual if you'd like. Would you prefer I generate the graph for the parent function and the transformed function?
Do you have any questions or would you like further details? Here are 5 questions to consider:
- How does a reflection across the x-axis affect the graph of a function?
- How do you find the vertex of a transformed quadratic function?
- What effect does a vertical stretch have on a parabola's width?
- What is the axis of symmetry in a quadratic function and how is it affected by transformations?
- How would additional transformations (e.g., horizontal stretch) impact the function?
Tip: Always remember to identify the vertex first when analyzing quadratic functions—it can give you key insights into transformations.
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Math Problem Analysis
Mathematical Concepts
Quadratic Functions
Function Transformations
Parabolas
Formulas
f(x) = a(x-h)^2 + k
Parent function: f(x) = x^2
Theorems
Vertex form of a quadratic function
Transformations of functions
Suitable Grade Level
Grades 9-11