Galsen Posted June 14, 2017 Report Share Posted June 14, 2017 I am having trouble with the problem: Let logax = c and logbx = d. Find the general statement that expresses logabx in terms of c and d. Could anyone give me any help? Reply Link to post Share on other sites More sharing options...
kw0573 Posted June 14, 2017 Report Share Posted June 14, 2017 You should use change of base, find expressions for log a and log b, then substitute those expressions into change of base for log_ab, then apply identity log ab = log a + log b Reply Link to post Share on other sites More sharing options...
Galsen Posted June 15, 2017 Author Report Share Posted June 15, 2017 Thank you but im getting stuck at the first step how do I express log a and log b by doing change of base? Reply Link to post Share on other sites More sharing options...
kw0573 Posted June 15, 2017 Report Share Posted June 15, 2017 (edited) For example, logax = c = log x / log a, Rearrange for log a ==> log a = log x / c Edited June 15, 2017 by kw0573 Reply Link to post Share on other sites More sharing options...
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