Question 226504
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Apply


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


to all three of your problems.  For the first one: *[tex \LARGE b\ =\ 3], *[tex \LARGE x\ =\ 81], and *[tex \LARGE y\ =\ 4], so:


*[tex \LARGE \ \ \ \ \ \ \ \ \ \ \log_3(81)\ =\ 4 \ \ \Rightarrow\ \ 3^4\ =\ 81] 


Do the others the same way.



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