Posts by JDM Educational Staff

When we work with polynomials, we may want to find the domain and range.  This helps us to graph the function, including any local or absolute extrema (maximums or minimums). So, what is the...

Back in 1976, Ann Landers, the famous advice columnist, posed this question to parents, “if you had to do it over again, would you become a parent?” Over 10,000 people voluntarily responded to...

When we work with rational functions, we often want to find the domain and range.  This helps us to graph the function, including any horizontal and vertical asymptotes. So, what is the...

When working with a parabola, you may need to know the possible inputs (domain, or x-values) and outputs (range, or y-values).  This will involve finding the local minimum or maximum (vertex),...

For the graph of a parabola, we would use a quadratic equation y = ax2 + bx + c to represent it.  However, there is another way: using a point (the focus) and a horizontal line (the...

When you work with radicals, you need to know the various parts and how they affect the value of the radical.  For example, the radicand is important, and we also need to understand the...