Asked by Lynn

Explain why an even function does not have an inverse that is a function.
and if log b < 0, what can you say about b?

Answers

Answered by Reiny
recall that the inverse of a function results in a reflection in the line y = x

Any even function has a reflection in a vertical line, usually the y-axis
Thus its inverse would result in a reflection in a horizontal line.
Thus a vertical line test, (a test if the relation is a function) , would fail .
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