) or any points from the denominator (since division by zero is undefined).
: Find the "zeros" by setting the numerator and denominator (if applicable) to zero. Mark Points on a Number Line : Solid dots : Used for non-strict inequalities ( ≤is less than or equal to ≥is greater than or equal to ) for points in the numerator. Hollow (open) dots : Used for strict inequalities ( is greater than gdz metod intervalov 4x
Метод интервалов • Математика | Фоксфорд Учебник ) or any points from the denominator (since
: Shaded intervals that match the inequality's sign ( >0is greater than 0 −negative Find the zeros : Solve . Using the quadratic formula or factoring, we get . The roots are Mark the points : Place hollow circles at -3negative 3 -1negative 1 on the number line (because the inequality is strict, Test intervals : (positive). (negative). (positive). Final Answer : Since we need values <0is less than 0 , the solution is the interval 4. Common Variations Hollow (open) dots : Used for strict inequalities