Hi all,

How can I solve this?

http://www4a.wolframalpha.com/Calcul...=62&w=233&h=30

I tried with log_a (b) - log_a (c) = log_a (b/c) but the solution is (13+5x)/(x^2+5x+4)>=0 ...how is this possible?

Thanks in advance

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- December 28th 2011, 06:43 AMLiberChroniconHow to solve this logarithmic inequality
Hi all,

How can I solve this?

http://www4a.wolframalpha.com/Calcul...=62&w=233&h=30

I tried with log_a (b) - log_a (c) = log_a (b/c) but the solution is (13+5x)/(x^2+5x+4)>=0 ...how is this possible?

Thanks in advance - December 28th 2011, 06:58 AMPlatoRe: How to solve this logarithmic inequality
- December 28th 2011, 07:00 AMHallsofIvyRe: How to solve this logarithmic inequality
Okay, as you say, is the same as .

Further ,**for any a< 1**, if and only if . That is, your inequality is the same as .

Subtracting 1 from both sides, .

Now, multiply both sides by -1.