Q#3. For a curve to be symmetric about the x-axis, the point (x, y) must lie on the curve if and only if the point (x, – y) lies on the curve. Explain why a curve that is symmetric about the x-axis is not the graph of a function, unless the function is y = 0.
Q#3. For a curve to be symmetric about the x-axis, the point (x, y) must lie on the curve if and only if the point (x, – y) lies on the curve. Explain why a curve that is symmetric about the x-axis is not the graph of a function, unless the function is y = 0.
Chapter3: Functions
Section3.1: Functions And Function Notation
Problem 3SE: Why does the vertical line test tell as whether the graph of a relation represents a function?
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