If a function y=f ( x ) has an inverse function, then f ( x ) cannot be 1. symmetric about x-axis 2. an odd function 3. symmetric about y-axis 4. an even function

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picop

  • Dec 3rd, 2007
 

3. symmetric about y-axis
4. an even function

an even function is symmetric with y-axis. If this function is symmetric with y-axis, each y value has two corresponding x values. A function can only has its inverse function when each y value just correspond to only one x value.

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