Expii

Rational Inequalities, Part 2: Divide into Intervals - Expii

To solve f(x) > 0 or f(x) < 0 (or a similar inequality with ≥ or ≤) given the zeros and undefined points of f(x), it helps to consider the real intervals created by those points. In the next step, we'll then find the sign of f(x) on each interval.