Question 328903
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Use the definition of the logarithm function.


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ y = \log_b(x) \ \ \Rightarrow\ \ b^y = x]


So:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x = \log_9(1) \ \ \Rightarrow\ \ 9^x = 1]


Then use:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x^0\ =\ 1\ \forall\ x\ \in\ \mathbb{R}]


to write:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ x\ =\ 0]



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