Calculators How can I solve inequalities with a TI-89?

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The TI-89 calculator does not support the 'solve' command for inequalities in the same way it does for equations. To solve inequalities, one effective method is to first solve the corresponding equation to find critical points where the sides are equal. Then, test a point in each interval created by these critical points to determine whether the inequality holds true (i.e., whether the region satisfies ">" or "<"). This approach allows users to identify the solution set for the inequality.
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I've got a TI-89, with which I'm trying to solve an inequality. Not a specific one, just in general. I try to use the 'solve' command just as for equations but with an inequal-sign instead, but it doesn't work. Anyone?
 
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But places where the sides are equal separate places where they are "<" from places where they are ">". If you don't have too many solutions to the equation, check one point between two solutions to see if that region gives ">" or "<".
 
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