Question 235000
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*[tex \LARGE \ \ \ \ \ \ \ \ \ \ f(x)\ =\ \frac{1}{x-a}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \{x\,|\,x\,\in\,\R,\ x\ \neq\ a\}]


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \left(-\infty\ ,\ a\right)\ \large\cup\LARGE\ \left(a\ ,\ \infty\right)]


John
*[tex \LARGE e^{i\pi} + 1 = 0]
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