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Student Support Forum: 'Equations/inequalities with exponential functions' topicStudent Support Forum > General > Archives > "Equations/inequalities with exponential functions"

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Caleb
02/08/10 08:39am

Hi,

I'm trying to reduce inequalities with various exponential functions and Mathematica just hangs on them (runs for a very long time).

For example:
Reduce[(x - 3)^(3 x^2 - 9 x + 15) - (x - 3)^(x^2 + 8 x - 20) >= 0 && x - 3 > 0, x, Reals]

It should reduce to (if I'm not wrong):
3.5 <= x <= 4 || x >= 5

I think this happens because there's a variable in the base.

Is Mathematica capable of reducing such inequalities, or am I doing someting wrong? :)

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Subject (listing for 'Equations/inequalities with exponential functions')
Author Date Posted
Equations/inequalities with exponential functions Caleb 02/08/10 08:39am
Re: Equations/inequalities with exponential fun... Bryan 03/02/10 08:46am
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