If the function is , then the expression of the function after reflection about the x-axis is .
Answer & Analysis
Analysis
Question Analysis
This question tests the student's understanding of reflecting a function about the x-axis. The transformation rule for this type of reflection is .
Key Concept Explanation
Reflecting a function about the x-axis changes the sign of the output variable.
Step-by-step Solution
Original function: The given function is .
Apply reflection about the x-axis: Using the key concept of x-axis reflection, the new function is obtained by negating the original function, i.e., .
Calculate the transformed function: Substitute into the reflection formula:
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