<PRE><B>Question 494744</B>
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A rational expression is undefined when the denominator is equal to zero.  So set the denominator expression equal to zero and solve.  The solution set thus obtained will be the set of numbers for which the rational expression is undefined.


John
*[tex \LARGE e^{i\pi} + 1 = 0]
My calculator said it, I believe it, that settles it
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