Sign of polynomial functions
- Autore:
- Francesca Berengo
Clicking on the check boxes you can see the parts of graph where f(x) is positive (negative) and the corresponding values of x on the x-axis.
You can also see the intersections of the function with the x-axis
Identify on the graph the intervals where the given functions given are
positive/negative. Then click on the check boxes to chech your answer.
1. f(x) = -x² + 2x + 3;
2. f(x) = -x³ - x² + 2x;
3. f(x) = x³ - 6x² + 5x + 12;
4. f(x) = x² + x + 1
5. f(x) = x⁴ + 1.5x³ - 2x² - 1.5x + 1
6. f(x) = 2x⁶ + x⁵ - 13.5x⁴ - 6.25x³ + 24.25x² + 9x - 9