If the function is , then the expression of the function after reflection about the y-axis is .
Answer & Analysis
Analysis
Question Analysis
This question examines the student's understanding of reflecting a quadratic function about the y-axis. The key concept is that reflecting a function about the y-axis results in the function .
Key Concept Explanation
When a function is reflected about the y-axis, the new function is given by . This means that each point on the graph of becomes
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