If the function is , then the expression of the function after reflection about the y-axis is .
Answer & Analysis
Analysis
Question Analysis
This question tests the student's understanding of reflecting a quadratic function about the y-axis. The original function is given, and the student must apply the rule for y-axis reflection, which is .
Key Concept Explanation
Reflection about the y-axis changes the sign of the independent variable, so if , then the reflected function is
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