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2 votes
4 answers
81 views

Find values of $x$, such as $\log_3 \sqrt{x+3}−\log_3(9−x^2) < 0$

The Function is $$f(x) = \log_3\sqrt{(x+3)}−\log_3(9−x^2)$$ and I need to figure out arguments for which $$ f(x) < 0 $$ So I calculated the domain of function which is $ D: (-3;3)$ However I am ...
Stageflix's user avatar
8 votes
4 answers
1k views

Are logarithms the only continuous function on $(0, \infty)$ such that $f(xy) = f(x) + f(y)$?

Are logarithms the only continuous function on $(0, \infty)$ that has this property? $$ f(xy) = f(x) + f(y) $$ If so, how would we show that? If not, what else would we need to show that a function $...
Axoren's user avatar
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